Technologies

Scientists concerned climate change is causing animals to ‘shape-shift’

Wood mice have larger ears. Australian parrots have bulkier bills. And the shifts are happening very quickly, researchers say.

The climate crisis is sending natural selection into overdrive, a new study suggests, forcing animals to cope with rapidly warming temperatures by physically morphing, or «shape-shifting.» That raises a piercing question: Can evolution keep up with the result of human-driven carbon emissions?

In the last 150 years, Australian parrots, such as gang-gang cockatoos and red-rumped parrots, have shown up to a 10% average increase in bill size alongside rising temperatures in their natural habitats, according to research published Tuesday in the journal Trends in Ecology & Evolution.

«It’s alarming that we are seeing these responses so early on in the climate crisis,» said study author Sara Ryding, a researcher in the School of Life and Environmental Sciences at Deakin University in Australia. «We don’t know if they’ll be able to keep up as the crisis worsens.»

The fluffy parrots streaked with bright colors aren’t the only victims of a warmer world. Several other species of birds in North America and Australia have seen an increase in bill size, wood mice have bigger ears, and some bats are flaunting an upgraded, larger set of wings.

Those larger appendages are expected to help the animals manage hot weather because they offer a greater surface area for releasing body heat. «This is not necessarily an increase that’s visible to the naked eye,» Ryding noted, «but it’s still functionally important.»

Though evolution has occurred since the beginning of life on Earth, Ryding worries that right now it’s happening far too quickly.

«I don’t want the takeaway to be that, ‘Oh, animals are evolving in response to climate change, that means they’ll be fine,’ because that simply isn’t true,» she said.

The team’s study, which scoured through tons of already published papers to compare trends in animal shape-shifting against climate change, recognized that the rampant adaptations are happening relatively early along the projected timeline of the climate crisis.

That timeline doesn’t taper off for a while.

The Intergovernmental Panel on Climate Change already calls many countries’ previous goal of limiting global warming in the next decades to 1.5 degrees, or even 2 degrees, as «beyond reach.» That’s unless there are «immediate, rapid and large-scale reductions in greenhouse gas emissions,» reads the group’s report from August, which the panel deems a «reality check.»

«Climatic changes are happening at a faster rate than ever before,» Ryding said. «Although evolutionary changes can be a slow process, taking thousands — or more — years, we also know that strong selection can drive faster evolutionary change.»

By strong selection, Ryding is referring to the intensity with which natural selection occurs. If only one in 10 members of a species can survive in a warm climate due to their having a larger appendage, the other nine won’t live long enough to pass their genes onto the next generation.

That’s why we’re seeing new cohorts of species with bulkier appendages riding the trajectory of global warming.

«Seeing just how widespread this phenomenon is across geographic scales and across a broad range of animals — the unifying factor that we find is climate change,» Ryding said.

The correlation makes sense, because of a theory first developed in 1877 by American zoologist and ornithologist Joel Asaph Allen. It basically states that animals living in warmer climates will have larger, longer appendages than those in colder areas.

«Animals can let go of excess body heat through their appendages, so larger appendages allow them to let go of even more excess body heat, which is beneficial as the climate warms,» Ryding explained.

Allen’s rule has been widely studied by scientists, including in a paper from 2020 that aims to establish its benefit as a predictive tool for climate change outcomes. However, the sheer coverage of Ryding’s work solidifies the phenomenon of expedited evolution as a far-reaching issue.

«I hope that these findings really highlight how climate change is impacting animals,» Ryding said, «and how important it is that we work to reduce our emissions and avoid the climate crisis as much as possible.»

Technologies

Today’s NYT Mini Crossword Answers for Monday, May 19

Here are the answers for The New York Times Mini Crossword for May 19.

Looking for the most recent Mini Crossword answer? Click here for today’s Mini Crossword hints, as well as our daily answers and hints for The New York Times Wordle, Strands, Connections and Connections: Sports Edition puzzles.

Today’s NYT Mini Crossword is pretty easy. 5-Across, «one for whom every day is Boxing Day,» stumped me because I really wanted the answer to have something to do with cats. (Spoiler: It did not.) Need some help with today’s Mini Crossword? Read on. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

The Mini Crossword is just one of many games in the Times’ games collection. If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get at those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: Network satirized on «30 Rock,» for short
Answer: NBC

4A clue: Sport played on horseback
Answer: POLO

5A clue: One for whom every day is Boxing Day?
Answer: MOVED

6A clue: Like correct letters in Wordle
Answer: GREEN

7A clue: Blend together
Answer: MELD

Mini down clues and answers

1D clue: «Invisible Man» or «Little Women»
Answer: NOVEL

2D clue: Run in the wash
Answer: BLEED

3D clue: What bourbon whiskey is primarily made from
Answer: CORN

4D clue: Tiny hole in the skin
Answer: PORE

5D clue: Longtime movie studio acquired by Amazon in 2022
Answer: MGM

How to play more Mini Crosswords

The New York Times Games section offers a large number of online games, but only some of them are free for all to play. You can play the current day’s Mini Crossword for free, but you’ll need a subscription to the Times Games section to play older puzzles from the archives.

Technologies

Today’s NYT Connections: Sports Edition Hints and Answers for May 19, #238

Hints and answers for the NYT Connections: Sports Edition puzzle, No. 238, for May 19.

Looking for the most recent regular Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle and Strands puzzles.

Connections: Sports Edition might be tough today if, like me, you don’t know what «loge» means. Read on for hints and the answers.

Connections: Sports Edition is out of beta now, making its debut on Super Bowl Sunday, Feb. 9. That’s a sign that the game has earned enough loyal players that The Athletic, the subscription-based sports journalism site owned by the Times, will continue to publish it. It doesn’t show up in the NYT Games app but now appears in The Athletic’s own app. Or you can continue to play it free online.

Read more: NYT Connections: Sports Edition Puzzle Comes Out of Beta

Hints for today’s Connections: Sports Edition groups

Here are four hints for the groupings in today’s Connections: Sports Edition puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: Brag.

Green group hint: Where’s my seat?

Blue group hint: City that never sleeps.

Purple group hint: Opposite of go.

Answers for today’s Connections: Sports Edition groups

Yellow group: Boast

Green group: Stadium seating sections

Blue group: New York Knicks

Purple group: ____ stop

Read more: Wordle Cheat Sheet: Here Are the Most Popular Letters Used in English Words

What are today’s Connections: Sports Edition answers?

The yellow words in today’s Connections

The theme is boast. The four answers are crow, gloat, grandstand and showboat.

The green words in today’s Connections

The theme is stadium seating sections. The four answers are bleacher, loge, suites and upper deck.

The blue words in today’s Connections

The theme is New York Knicks. The four answers are Bridges, Hart, McBride and Towns.

The purple words in today’s Connections

The theme is ____ stop. The four answers are back, jump, pit and short.

Technologies

Blade Runner: 18-Rotor «Volocopter» Moving from Concept to Prototype

It may look "nutty" and like a "blender," but the designers say the craft could challenge helicopters

Inventor and physicist Thomas Senkel created an Internet sensation with the October 2011 video of his maiden—and only—test flight of a spidery proof-of-concept 16-rotor helicopter dubbed Multicopter 1. Now the maker of the experimental personal aviation craft, the European start-up e-volo, is back with a revised «volocopter» design that adds two more rotors, a serial hybrid drive and long-term plans for going to 100 percent battery power.

The new design calls for 1.8-meter, 0.5-kilogram carbon-fiber blades, each paired with a motor. They are arrayed around a hub in two concentric circles over a boxy one- or two-person cockpit.

After awarding the volocopter concept a Lindbergh Prize for Innovation in April, Yolanka Wulff, executive director of The Charles A. and Anne Morrow Lindbergh Foundation, admitted the idea of the multi-blade chopper at first seems «nutty.» Looking beyond the novel appearance, however, she says, e-volo’s concept excels in safety, energy efficiency and simplicity, which were the bases of the prize.

All three attributes arrive thanks largely to evolo’s removal of classic helicopter elements. First, the energy-robbing high-mass main rotor, transmission, tail boom and tail rotor are gone. The enormous blades over a normal chopper’s cabin create lift, but their mass creates a high degree of stress and wear on the craft. And the small tail rotor, perched vertically out on a boom behind the cabin, keeps the helicopter’s body from spinning in the opposite direction as the main blades, but it also eats up about 30 percent of a helicopter’s power.

The volocopter’s multiple rotor blades individually would not create the torque that a single large rotor produces, and they offer redundancy for safety. Hypothetically, the volocopter could fly with a few as 12 functioning rotors, as long as those rotors were not all clustered together on one side, says Senkel, the aircraft’s co-inventor and e-volo’s lead construction engineer.

Without the iconic two-prop configuration, the craft would be lighter, making it more fuel efficient and reducing the physical complexity of delivering power to the top and rear blades from a single engine. Nor would the volocopter need an energy-hungry transmission. In fact, «there will be no mechanical connection between the gas engine and the blades,» Senkel says. That means fewer points of energy loss and more redundancy for safety.

E-volo’s design eliminates the dependence on a single source of power to the blades. As a serial-hybrid vehicle, the volocopter would have a gas-fueled engine, in this case an engine capable of generating 50- to 75 kilowatts, typical of ultralight aircraft. Rather than mechanically drive the rotors, the engine would generate power for electric motors as well as charge onboard lithium batteries. Should it fail, the batteries are expected to provide enough backup power so the craft could make a controlled landing.

Whereas helicopters navigate by changing the pitch of the main and tail rotor blades, the volocopter’s maneuverability will depend on changing the speed of individual rotors. Although more complex, it is more precise in principle to control a craft using three to six redundant microcontrollers (in case one or more fails) interpreting instructions from a pilot using a game console–like joystick—instead of rudder pedals, a control stick and a throttle.

Wulff’s first impression about the volocopter’s design is not uncommon. E-volo’s computer-animated promotional videos of a gleaming white, carbon-fiber and fiberglass craft beneath a thatch of blades recall the many-winged would-be flying machines of the late 19th century. This point is not lost on Senkel.

«I understand these skeptical opinions,» he says. «The design concept looks like a blender. But we really are making a safe flying machine.»

That would be progress in itself. Multicopter 1 looked like something from an especially iffy episode of MacGyver, complete with landing gear that involved a silver yoga ball. Senkel rode seated amid all those rotors powered only by lithium batteries. Multicopter 1 generated an average of 20 kilowatts for hovering and was aloft for just a few minutes.

There’s a reason why the experimental craft flew briefly and only once.Senkel describes that first craft as «glued and screwed together.» Seated on the same platform as the spinning blades, he says, «I was aware of the fact that I will be dead, maybe. Besides, we showed that the concept works. What do we win if we fly it twice?» he asks rhetorically.

Other than putting the pilot safely below the blades, the revised volocopter design would operate largely the same as the initial prototype. The design calls for three to six redundant accelerometers and gyroscopes to measure the volocopter’s position and orientation, creating a feedback loop that gives the craft stability and makes it easier to fly, Senkel says.

The volocopter’s revised prototype under construction could debut as soon as next spring. The first production models, available in perhaps three years, are expected to fly for at least an hour at speeds exceeding 100 kilometers per hour and a minimum altitude of about 2,000 meters, still far shy of standard helicopter’s normal operating altitude of about 3,000 meters. «This could change our lives, but I don’t expect anything like that for 10 years,» Senkel adds.

Given that most of the technology needed to build the volocopter is already available, «this idea is fairly easy to realize,» says Carl Kühn, managing director of e-volo partner Smoto GmbH, a company that integrates electric drive systems and related components.

Like Senkel, Kühn has modest short-term expectations despite his repeated emphasis on the standard nature of the technology involved. «I guess that e-volo will have [a prototype] aircraft in three years that can do the job—that it will lift one or two persons from one point to another,» he says.

The biggest immediate limitations appear to be regulatory. For instance, European aviation regulators consider any electrical system greater than 60 volts to be high voltage and regulate such systems more aggressively, Kühn says. As a result, the volocopter will operate below that threshold. The craft will also need to weigh no more than 450 kilograms to remain in the ultralight category, which is likewise subject to fewer government aviation regulations, according to Senkel.

The Lindbergh Foundation’s Wulff says the organization’s judges felt e-volo had «a greater than 50 percent chance of succeeding, or they wouldn’t have given them the innovation award.» Asked if she would line up to fly one someday, she says, «I sure would. It looks very compelling to me.»