Tuna (or any seafood for that matter) is an odd favorite for cats—an animal that evolved in the desert. On #Caturday, explore the research that may give a biological explanation for this curious craving. scim.ag/52s

It’s the first video evidence of polar bears hunting and eating reindeer—something that had long been assumed, but never clearly seen. #ScienceMagArchives scim.ag/52m

The XPRIZE Foundation has announced $101 million in prizes for researchers who can restore the function of an elderly person’s muscle, cognition, and immune system to a more youthful state. scim.ag/52l

Coordinated courtship behavior of ostracods can ripple for tens of meters across the ocean floor. scim.ag/52k

The first proposed update in nearly 20 years to U.S. rules governing research misconduct by biomedical scientists is drawing mixed reviews. scim.ag/52i

It’s the first time a frog—or any amphibian—has been observed pollinating a plant. scim.ag/52h

Most bees live underground. These x-ray images reveal how they build their nests: scim.ag/52c

Astronomy research is notoriously dominated by men. But in just 5 years, an Australian astrophysics center achieved gender parity. scim.ag/527

It’s not an AIDS vaccine but it may be the closest thing to one so far. #WorldAIDSDay scim.ag/521

An engaging blend of hand fans, #LordOfTheRings, and #Chemistry won Science’s last #DanceYourPhD competition, and we can’t wait to see who takes the next crown. The latest edition of the contest, our 16th, is now open to entries. ⬇️ scim.ag/51S

If Geert Wilder’s far-right party can form a government in the Netherlands, it could restrict international students and scrap key climate policies. scim.ag/51M

The National Institutes of Health has paused the start of a major human trial of an experimental drug aimed at protecting the brain after stroke. scim.ag/51L

Since Russia’s invasion of Ukraine, international observers have verified damage to hundreds of buildings. Now, archaeologists are surveying another category of destruction: damage to Ukraine’s archaeological heritage, much of which remains underground. scim.ag/51F

Sweet nectar produced by Indian pitcher plants is laced with a potent neurotoxin that may lure hungry insects to their doom. scim.ag/51B

How small domestic cats can produce such low-frequency sounds has long been an anatomical mystery, but a recent study may finally have the answer. scim.ag/51x

The genetics of head lice may shed light on when and where groups of humans split and came together in the past. scim.ag/51v

Researchers have created designer versions of all yeast chromosomes and incorporated almost half of them into cells that can survive and reproduce. scim.ag/51t

All health care students worldwide should learn the history of medicine during the Nazi regime and the Holocaust, according to a new report. scim.ag/51s

If you see a dead housefly on a windowsill surrounded by a ghostly halo of tiny white spores, it’s a death trap. #ScienceMagArchives scim.ag/51q

The orchid mantis’ petal-shaped legs allow it to glide 50% to 200% farther than other invertebrates. scim.ag/51p

As climate-friendly fuels, hydrogen and ammonia can be enticing. But their potential side effects are too often overlooked, researchers warn. scim.ag/51m

New research finds a common skin bacterium can cause itchiness—even without any inflammation. scim.ag/51k

During nesting season, chinstrap penguins sleep only in secondslong increments, netting the birds about 11 hours of sleep per day, potentially offering them a way to rest while remaining vigilant over their eggs and chicks. scim.ag/51i

Researchers have coaxed tracheal cells to form coordinated groups called organoids that can propel themselves with tiny appendages. When added to wounded neurons in the lab, these “anthrobots” helped neurons repair themselves. scim.ag/51f

It took more than a century for scientists to settle on the idea that maize was domesticated about 9000 years ago in Mexico from wild grass. Now, new research has complicated that history, reporting that maize may have a second wild ancestor. scim.ag/51b

New research adds to the growing evidence challenging the textbook view that permanent settlements—and walls to protect them—could only arise after the dawn of agriculture. scim.ag/519

As alarm about #ClimateChange grows, scientists explore a strategy for drawing excess carbon dioxide into the ocean. scim.ag/514

165 million years ago, 45-ton fish swam the ancient seas. #ScienceMagArchives scim.ag/50Z

A distinct set of neurons seems to control eating speed and eating amount, a new study finds. scim.ag/50V

The British health study known as the UK Biobank made the full genetic sequences of nearly 500,000 people available to scientists for analysis, more than doubling the size of an earlier data set. scim.ag/50R