Technologies

Greenland’s Huge Meltwater Waterfalls Generate Massive Hydropower

New research finds that the huge ice sheet is melting both from the top and bottom.

The surface of the Greenland ice sheet is melting, creating a network of ephemeral rivers and waterfalls that scientists say produces more hydropower than the collective output of the 10 largest hydroelectric stations on the planet.

It’s part of a brutal feedback loop brought on by climate change that could hasten the rise in sea levels around the world.

In summer, an increasing amount of the frozen surface melts, forming lakes and streams that rapidly make their way to the bottom of the ice sheet — traveling downward as much as a full kilometer — by rushing through cracks and large fractures. An international team of researchers set out to measure how much energy was created by this process.

«There’s a lot of gravitational energy stored in the water that forms on the surface, and when it falls, the energy has to go somewhere,» Cambridge University professor Poul Christoffersen explained in a statement.

Unfortunately, that energy is being converted to heat at the base of the ice sheet, leading to high rates of melting both on the top and bottom of the sheet.

The team used a kind of radar to measure the amount of melting and found rates often just as high on the bottom of the ice sheet as on the sun-splashed surface.

«The heat generated by the falling water is melting the ice from the bottom up, and the melt rate we are reporting is completely unprecedented,» Christoffersen said.

The study is published in the latest issue of the Proceedings of the National Academy of Sciences.

The researchers calculate up to 82 million cubic meters of water fell from the surface to the base of Store Glacier on the Greenland Ice Sheet each day during the summer of 2014. They estimate that water falling to the bottom of the sheet produces more hydropower during summer than the world’s top 10 hydroelectric generating stations combined.

«Given what we are witnessing at the high latitudes in terms of climate change, this form of hydropower could easily double or triple, and we’re still not even including these numbers when we estimate the ice sheet’s contribution to sea level rise,» Christoffersen said.

The Greenland Ice Sheet is already the largest single contributor to global sea level rise.

It’s too bad there’s no practical way to capture this hidden hydropower, as all that clean energy could help reduce the emissions that are actually accelerating its creation.

Technologies

We Love This Ugreen Tracker, and It’s Just $13 Right Now

These handy tags are a great way to keep track of your items without having to fork over the full price of $20 — for a limited time, at least.

Losing keys, having misplaced luggage and other items can be a major inconvenience. It takes time to recuperate your things, and replacing them can cost you money you’d rather spend on other needs. If you’ve got a few things you want to keep a closer eye on, then a tracker might be a great option for you. We’ve spotted this Ugreen FineTrack smart finder for just $13 at Amazon, which saves you $7 after you clip the on-page coupon. Amazon prices tend to fluctuate, so we suggest acting fast if this deal is of interest. Plus, it’s a great chance to save on electronic goods that might increase in cost due to impending tariffs.

This Ugreen FineTrack smart finder is compact, light and easily clips onto your keys, bags and other items. It’s compatible with Apple’s FindMy feature, which makes it a more affordable alternative to AirTags, which have a list price of $30. Once removed from the package, all have to do is use Bluetooth and sync this tracker to your FindMy app on any Apple device. The Ugreen FineTrack requires a battery that can last up to two years.

Hey, did you know? CNET Deals texts are free, easy and save you money.

Need an extra pair of eyes? You can share the location of your tag with up to five more people. Plus, you can turn on an alarm that makes a loud sound so you can locate misplaced items. You can also set up notifications that can remind you if you’ve left something behind.

To better take advantage of these trackers, take a look at our article about the best places to use your tracker during travels.

Why this deal matters

This Ugreen FineTrack smart finder is down to just $13 for a limited time at Amazon. This saves you $7 over its usual asking price and is much more budget-friendly than other available trackers. Considering the potential for price increases due to tariffs, now is an excellent opportunity to nab this deal.

Technologies

Today’s NYT Strands Hints, Answers and Help for April 28, #421

Here are hints and answers for the NYT Strands puzzle No. 421 for April 28.

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

Today’s NYT Strands puzzle has a very strange, long spangram, but the answers themselves are short and pretty easy to solve. If you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: My bad!

If that doesn’t help you, here’s a clue: Uh-oh!

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints, but any words of four or more letters that you find will work:

NUMB, TOLE, POLE, POLES, SPIT, PITS, SOPPY, BREW, TALE, DUMB, DUMBS, ALTER, LETS, BALE, BALES.

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you’ve got all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers:

SLIP, SPILL, FALTER, TOPPLE, BLUNDER, STUMBLE.

Today’s Strands spangram

Today’s Strands spangram is WHOOPSIEDAISY.To find it, start with the W that’s four letters down on the far right row, and wind across, and then down.

Technologies

Today’s NYT Connections Hints, Answers and Help for April 28, #687

Hints and answers for Connections for April 28, #687.

Looking for the most recent 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, Connections: Sports Edition and Strands puzzles.

As an ’80s girl, I immediately spotted the four words in the yellow category of today’s Connections puzzle. I definitely had at least three of those products in my college apartment, so that was an easy solve. And since I read a lot of Nancy Drew and Agatha Christie, the blue category came along pretty easily, too. Read on for clues and today’s Connections answers.

The Times now has a Connections Bot, like the one for Wordle. Go there after you play to receive a numeric score and to have the program analyze your answers. Players who are registered with the Times Games section can now nerd out by following their progress, including number of puzzles completed, win rate, number of times they nabbed a perfect score and their win streak.

Read more: Hints, Tips and Strategies to Help You Win at NYT Connections Every Time

Hints for today’s Connections groups

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

Yellow group hint: Bought at Ulta, maybe.

Green group hint: Not fancy.

Blue group hint: Nancy Drew would spot these.

Purple group hint: Yawn.