QUIZ: Which Diesel Bro Should You Grab Grub With?

The European Space Agency’s Gaia spacecraft has managed to watch stars tremble, their light subtly changing as starquakes ripple through their surfaces. Which is pretty cool, because Gaia wasn’t even designed to do it.

Luke Tipple speaks with Dr. Riley Elliott, a marine biologist from New Zealand who recently tagged baby great white sharks, which are rarely seen in the wild. They talk about how climate change is affecting shark pupping grounds, why fishers are wrong to think there are “too many sharks,” and about Dr. Elliott’s Great White App, which allows users to track great white sharks in the ocean.

Learn about why February only has 28 days; why early birds and night owls aren’t the only two chronotypes; and why the anchoring effect says you should always make the first offer when you’re negotiating.

Learn about why there’s no such thing as a hypoallergenic dog; why you should praise kids for their work ethic, not their smarts; and why you should never put coffee grounds in your garden.

Learn about how clocks and lightbulbs changed human health, with author and materials scientist Ainissa Ramirez. Plus: learn about that time a bunch of birds became milk bottle thieves and whether you should put one or two spaces after a period.

Learn about what's going on with the new COVID-19 variants — and whether you should worry about them — with Dr. Syra Madad, nationally recognized epidemiologist and the senior director of the pathogens program at NYC Health and Hospitals. Then, learn about a new theory on how our planets formed.

Learn how to tap into your “gut feeling,” which knows more than you think it does; and why Earth's core is growing lopsided.

Learn how earworms could be helping your memory; how auroras are created; and what your cat should drink instead of milk.

Learn about why successful people should reveal their failures; the death of planet WASP-12b; and Dutch “tulip mania.”

Learn why robots should look like cartoons; why more access to an opioid antidote doesn't make people think heroin is safe; and why dishwashers make knives less sharp.