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Cicadas Are Coming: Here’s What We Know About Brood XIX and Brood XIII

Get ready for double the cicada buzz in 2024, depending on where you live.

Ah, the sounds of summer. Splashing waves at the beach, a lawn sprinkler spinning deliriously, the bells of an ice-cream truck … and the constant buzz of cicadas. If you live in certain states, get ready, because they’re coming back in 2024.

Cicadas, winged insects with an especially loud song, have a weird life cycle. They grow underground, but we humans mostly pay attention to them when they emerge into our above-ground world. 

There are annual cicadas, which emerge from their underground life every year at various times. Then there are periodical cicadas, which emerge only every 13 or 17 years. Those groupings are called broods and are numbered. Because of their trackable schedule, these broods of periodical cicadas tend to steal all the headlines from their annual cicada comrades.

This summer, it’s a double-brood year. That’s rare. According to ScienceAlert, the last time it happened was in 1803. One brood on a 13-year-cycle — called Brood XIX — and another on a 17-year cycle — called Brood XIII — are expected to pop out of the ground in 2024.

Here’s what to know before they take over your neighborhood between May and June, including how to protect your hearing from all that cicada noise — and whether climate change could be responsible for be disrupting the cicada cycle.

What’s expected in 2024

Brood XIX

Brood XIX, also called the Great Southern Brood, is the biggest brood of 13-year periodical cicadas, if you go by geographical distribution. It was last seen in 2011 in the Southeast US. Most periodical cicadas are on a 17-year cycle, but Brood XIX is on a 13-year cycle. The two other surviving 13-year broods are expected to return in 2027 and 2028.

This brood is expected to re-emerge in mid-May and stay around through late June. The cicadas tunnel to the surface, mate, lay their eggs and then die off. Look (and listen) for them in Alabama, Arkansas, Georgia, Illinois, Indiana, Kentucky, Louisiana, Mississippi, Missouri, North Carolina, Oklahoma, South Carolina, Tennessee and Virginia.

Brood XIII

Brood XIII is known as the Northern Illinois Brood. (Illinois seems to appeal to cicadas more than any other state. Experts at the University of Connecticut say that the Land of Lincoln “contains both 13- and 17-year life cycles, all seven currently recognized species, and five separate broods, some of which include disjunct populations.” Talk about the Big Noise from Illinois.

This is one of the 17-year cicada broods. It was last seen in 2007 and should be back from mid-May to late June, just like Brood XIX. They are expected to appear in Illinois, Indiana, Iowa, Wisconsin and possibly Michigan.

The basics about cicadas

According to the EPA, cicadas are about 1 to 1.5 inches long, with a wingspan twice that length. They have black bodies, red-brown eyes and membranous wings with orange veins. The noise that makes them famous is the loud courting sound of the adult males.

The name of the species is pronounced differently in the US, where most people say “suh-KEI-duh,” than it is in the UK, where people tend to say, “suh-KAA-dah.”

What to do about the cicadas

Live and let live — they’re temporary and harmless. Cicadas may be noisy, but they don’t bite or sting. And unlike termites, they won’t chew their way into your house, though they could enter through open doors and windows as other insects can. In fact, pest-control experts say that pesticides don’t work on cicadas.

“It’s a waste of (pesticide), and it’s a danger to the environment just to spray down because you’re afraid of the cicadas,” one expert told CNET in 2021.

How can you manage the cicada noise?

The main problem with the cicadas is obvious: their constant buzzing noise. They’re around only for about six weeks, however, so experts have some ideas for how to keep the sound from driving you buggy.

These aren’t cicada-specific remedies, but they work. You might try noise-canceling headphones, white-noise machines or simple earplugs. You can also try some DIY soundproofing, such as weather-stripping foam tape.

Climate change and cicadas

Climate change brings rising global temperatures, and the cicadas aren’t working with a calendar, they’re reacting to temperatures. So it’s unsurprising that scientists believe climate change affects the cicadas as well.

Chris Simon, a professor in the department of ecology and evolutionary biology at the University of Connecticut, has studied and researched cicadas for years.

“Warmer winters and earlier springs will cause cicadas to come out earlier,” Simon told CNET. “Warming climates also increase the growing season in a given area so that cicadas may be ready to emerge from the ground years earlier — generally four years earlier — turning 17-year cicada populations into temporary 13-year cicadas. If this happens repeatedly, we hypothesize that 17-year cicadas could become permanent 13-year cicadas.”

But that change wouldn’t reduce the number of cicadas, Simon told CNET, just adjust their schedule. And it shouldn’t affect the food chain, because “the animals that eat them above ground would see them more often, and the animals that eat them underground would still do so,” Simon said.

While it’s possible that climate change could force the cicadas to move farther north, that won’t be an immediate change. Simon notes that periodical cicadas can move only as adults, and that can happen only for about for weeks every 13 or 17 years. While periodical cicadas can fly, they tend not to move much or migrate long distances. Human-made asphalt and cement obstacles could also prevent the cicadas from taking off to the great white north.

How you can help cicada researchers

Want to help scientists learn more about periodical cicadas?

“Citizen scientists are critical for filling in the parts of the distribution that we do not have time to visit or unknown parts of the distribution that we can later verify,” Simon told CNET.

To help you can download Cicada Safari for iOS or Android, a free app developed by Simon’s colleague Gene Kritsky. The app asks people to take a cicada photo using their phone, with geolocation allowed. 

“(Kritsky’s) team will verify photos and log the data and share it with us,” Simon said.

How to protect new, small trees from cicadas

While cicadas shouldn’t hurt large, mature trees, new young trees may be vulnerable. Female cicadas like to lay their eggs on trees where new leaves are located, puncturing the branches and possibly causing leaves to wither, turn brown and even snap. So if you live in a cicada territory, hold off on planting any new trees until they’re gone, which should be in late June.

If you have new small trees and are worried about cicada damage, you may want to loosely wrap their trunks and the areas where twigs meet the branches. You can use cheesecloth, foil tape, barrier tape or sticky tape. You could also use landscaping nets around smaller trees. CNET has a guide to tree protection against cicadas.

People eat cicadas?

This last bit isn’t for everybody, but you can actually eat cicadas. Don’t even try it, though, if you have seafood allergies, because cicadas are related to shrimp and lobster.

If you’re made of tough stuff and don’t get easily queased-out by unusual foods, there are plenty of simple cicada recipes on the web. An expert from Johns Hopkins University says they’re “quite tasty” but admits “the yuck factor” might keep most of us from even trying.

The good news, though, is that if your dog wolfs a few down — and dog owners know some pups will eat literally anything — cicadas shouldn’t harm them. Just watch that they don’t choke from eating too many at once.

Technologies

OpenAI chief Sam Altman outlines why the AI sector is urging a slowdown: risk of losing control

Sam Altman and Dario Amodei call for a measured pace in AI development, proposing safety frameworks and international coordination to avoid losing control, while U.S. and Chinese tensions underscore the urgency.

OpenAI’s Sam Altman offered the most thorough remarks to date on potential AI safety frameworks, following his alignment with Anthropic’s Dario Amodei and Elon Musk in urging a temporary slowdown of the sector. Tensions surrounding AI safety have surged after an Anthropic researcher resigned last week, claiming that developers feared the technology could “cause humanity’s demise by the end of the decade,” a warning that spurred similar alarm among OpenAI staff and other lab members. The leaders of major AI firms have recently shown uncommon agreement, as Altman and Musk jointly endorsed Amodei’s essay calling for a measured pace in advancing the most powerful AI models. AI‑related stock prices fell on Monday as investors reacted to the statements, while U.S. President Donald Trump rejected the CEOs’ caution on Sunday, arguing that a slowdown would hinder America’s dominance in AI compared with China. Sam Altman outlines two potential disastrous outcomes for AI development. Altman stated in a late‑night X post that a federal framework establishing uniform safety standards for frontier AI is welcome, emphasizing that “no level of American competitive pressure can excuse reckless behavior.” He warned that AI advancement might lead to loss of control over future outcomes and could concentrate excessive power in the hands of a single individual or corporation. At the same time, Washington legislators are rushing to respond to demands for regulatory safeguards. The developments occur as Anthropic and OpenAI prepare for what could be historic initial public offerings, with Altman stating in a Fortune interview on Saturday that the companies will not pursue an IPO in 2026. Amodei’s three‑step plan. A primary safety concern involves models gaining the capacity to enhance their own performance, a process called recursive self‑improvement (RSI). He noted that since early summer AI has been progressing rapidly, largely because AI systems are now capable of creating the next generation of AI themselves. He warned that without oversight, the technology could outpace our capacity to comprehend and control it, making careful, possibly restrained, development essential. He outlined a three‑step approach designed to slow development while preserving commercial benefits and maintaining the United States’ competitive edge in AI. The plan calls for every frontier AI company to provide external evaluators with access comparable to that of employees — a commitment Anthropic has already made — and urges all such labs to adopt shared safety standards, curb uncontrolled AI acceleration, and coordinate globally. On Saturday, Altman posted on X that he concurred with Amodei’s call for AI firms to “pace the frontier,” adding that adopting independent evaluators with employee‑level access is a worthwhile step and that his company will follow suit. Altman said in a Monday post that consistent regulations to manage frontier risk — such as independent auditors — are valuable, but clarified that “pacing” does not equate to halting progress, which remains swift and ongoing. He concluded that the costs of pacing are justified, asserting that no level of American competitive pressure can excuse reckless actions that let capabilities outpace alignment and monitoring. He noted that governmental assistance will be needed for international coordination, but emphasized that the industry should first act independently. Coordinating AI safety measures and a sector‑wide slowdown with Chinese AI developers will present significant hurdles. The United States and China continue a rivalry for AI supremacy, with tensions rising as Chinese models become increasingly sophisticated and widely adopted. He added that the toughest aspect of his proposal is the possibility that rival nations may decline to adopt similar measures. He noted that the long‑term goal would be collaborative effort to impose a speed limit on AI progress, according to an interview with CBS News’ “Sunday Morning.” He acknowledged that achieving such a limit would be challenging due to strong incentives to get ahead and the military advantages involved, admitting uncertainty about feasibility but urging an attempt. The essay has attracted criticism in China, with state‑owned Global Times stating on Monday that “Amodei’s proposals aim to cast China’s legitimate AI development as a threat and exacerbate U.S.–China confrontation.” China’s Foreign Ministry responded on Monday, labeling the CEOs’ remarks as “fearmongering.”

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Novo CEO tells CNBC why drugmaker is rebranding, needs to ‘rethink’ obesity strategy

The Danish drugmaker called the changes the beginning of a new chapter for the company, which faces stiff competition from Eli Lilly.

Novo Nordisk

The Danish drugmaker called the changes the beginning of a new chapter, as it has been grappling with stiff competition from chief rival Eli Lilly

In an exclusive interview with CNBC, Novo CEO Mike Doustdar said the rebrand and culture shift are “part of the same package” for the company to evolve its strategy as it tries to win back customers from Lilly.

“I think there’s no secret that over the last four or five years, the external environment and what has happened to Novo Nordisk has really made us reflect how we need to readjust and rethink about the next decade to come and what shifts are needed in our strategic direction,” he told CNBC.

Doustdar said the “work is cut out for us,” adding that Novo needs to improve several aspects – from research and development and manufacturing to sales and marketing – to be able to compete in the obesity drug market.

Shares of Novo have dropped about 15% this year despite the successful launch of the oral version of Wegovy, which surpassed 3 million prescriptions as of June. The company recently scrapped three trials on an experimental cardiovascular drug. That challenge came as it continues to lag in the obesity space with 38.8% market share compared to Lilly’s 60.9% in the second quarter, according to a Lilly earnings presentation citing IQVIA data.

In a release, Novo also announced a broader company rebrand focused around the phrase “Lasting Health Starts Now,” which promotes the idea that patients should make progress toward long-term well-being immediately rather than later. The company said the marketing is a bid to build relevance and trust with the public and other stakeholders, and bring “breakthrough science closer to people’s daily lives.”

When asked whether the rebrand and cultural overhaul were driven by Novo’s recent market share losses in obesity, Doustdar said the changes were less about competitive setbacks and more about adapting to a dramatically different operating environment.

He said the rapid growth of obesity treatments has transformed Novo’s patient base and shifted the market toward a more consumer-oriented model, where patients move on and off therapies more frequently than in traditional diabetes care. As a result, Doustdar said Novo needs to become more focused on meeting patients where they are, while increasing the speed and clarity of its decision-making to keep pace with the evolving market.

“Our operating environment phenomenally changed compared to just 10 years ago,” he told CNBC.

Novo Nordisk will remain the legal name for the company, according to the release. That original name dates back to the 1989 merger of two competing Danish pharmaceutical companies: Novo Terapeutisk Laboratorium and Nordisk Insulinlaboratorium.

The drugmaker said its corporate culture will be based on a new set of four principles that will help it gain advantages in an increasingly competitive market where more of its products have gone direct-to-consumer.

Those tenets are innovating with patients as the primary focus, raising the company’s performance to “create greater value for all stakeholders,” setting clearer priorities and simpler workflows and never compromising on patient safety and ethics.

“When you think about strategy, that’s really the the journey you’re taking and the direction you’re setting the company to go forward with,” Doustdar said. “But you also need behaviors. You need a cultural element that allows your colleagues and yourself to really make sure that a strategy gets executed.”

Despite its challenges, Novo has had one significant tailwind this year in the launch of the oral version of Wegovy. On top of its explosive launch, the pill had a head start over a rival weight loss pill from Lilly called Foundayo.

Doustdar said Novo has maintained “a lion’s share” of the oral market even with competition, noting that physicians find the Wegovy pill to be more effective than Lilly’s, with around 17% of weight loss.

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Iran Claims It Shot Down U.S. Advanced Drone Near Hormuz as Middle East Tensions Rise

Iran says it shot down an advanced U.S. drone over the Strait of Hormuz amid rising tensions and stalled diplomacy. President Trump linked the conflict to potential oil control, citing the Venezuela deal and predicting lower gas prices if the war ends.

Iran’s military announced it had shot down a sophisticated American drone above the Strait of Hormuz, marking the latest volley in a cycle of warnings and strikes between Tehran and Washington that shows no sign of easing.

The Islamic Revolutionary Guard Corps stated on Monday that its newly unveiled advanced aerospace defense system intercepted and destroyed an advanced MQ‑1 drone over the Hormuz strait, offering no further details about the drone’s mission. The MQ‑1, built by U.S. defense contractor General Atomics, has historically been flown mainly by the U.S. Air Force and the CIA.

The downing comes after a string of Iranian actions targeting U.S. unmanned naval assets in the Gulf, as the conflict, now in its seventh month, continues with little de‑escalation and diplomatic efforts over the vital waterway remain stalled.

On Sunday, President Donald Trump said the United States could keep pressing its campaign against Iran and seize control of its oil, comparing the situation to the agreement Washington reached with Venezuela earlier this year.

“We’ll ultimately get out (of the war), unless we decide to stay and keep the oil like Venezuela,” Trump remarked at the Irish Open golf championship in Ireland. He added that the revenue the U.S. gains from the Venezuela deal — which gave Washington access to about one‑fifth of Venezuela’s oil reserves — has “paid for the war many times.”

Under the August agreement, Venezuela handed over majority U.S. control of more than 65 billion barrels of oil reserves — more than twice the size of America’s own reserves — in exchange for $209 billion deposited into Venezuela’s state treasury. Secretary of State Marco Rubio said the pact would also attract roughly $100 billion in private investment to help revive the Venezuelan economy.

Trump also said on Sunday that he expects the seven‑month Iran war to conclude this year, perhaps after the November midterm elections, and insisted that gasoline prices would “drop like a rock” once the conflict ends.

He stressed that he would only accept the “right deal,” noting that Tehran has been “calling constantly” for peace talks, a claim Iran has previously rejected.

**Stalled Hormuz talks**

A planned meeting in Oman between Gulf states and Iran to discuss possible arrangements for the Strait of Hormuz — the crucial conduit for global oil and gas shipments — was postponed, Omani Foreign Minister Badr Albusaidi said on X on Sunday, citing the need for “consensus.”

Iranian and Gulf officials had been slated to meet on Monday to sign an accord establishing an Iran‑Oman shipping lane through the Strait of Hormuz, although no direct negotiations between the United States and Iran were underway at that time.

Since the war began in February, the Strait of Hormuz has been under an Iranian‑led naval blockade, later joined by U.S. forces, keeping global energy prices elevated.

A June agreement between Washington and Tehran collapsed over disagreements about the waterway, and a recent surge in attacks by Yemen’s Houthi rebels — an ally of Tehran — has given that group leverage over another key chokepoint, the Bab el‑Mandeb.

Vessels deemed non‑compliant are routinely struck by Iranian forces, while the United States periodically launches strikes on the Iranian coast to challenge the Islamic Republic’s hold on the strait.

Oil prices climbed above $100 a barrel again for the first time since May and rose further on Monday after Saudi Arabia shut a major East‑West energy pipeline following damage from Iraqi drones.

U.S. West Texas Intermediate futures gained 2.3% to $102.39 per barrel, and Brent crude, the global benchmark, rose 2.4% to $107.11 per barrel.

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