Masaki Kashiwara, a Japanese mathematician, received this year’s Abel Prize, which aspires to be the equivalent of the Nobel Prize in math. Dr. Kashiwara’s highly abstract work combined algebra, geometry and differential equations in surprising ways. The Norwegian Academy of Science and Letters, which manages the Abel Prize, announced the honor on Wednesday morning. “First … Read more
In 1996, Kat Albrecht was a police officer and bloodhound handler in Santa Cruz, Calif. Her dog, A.J., had been a part of many search and rescue efforts, sniffing out and locating lost people in the woods. But when A.J. escaped Ms. Albrecht’s yard, there was no team of expert animal rescuers to turn to. … Read more
When she spotted the mako shark in the Hauraki Gulf off New Zealand, Rochelle Constantine, a marine ecologist at the University of Auckland, was concerned. The animal had a curious orangey-brown mass perched on top of its head. “At first, I was like, ‘Is it a buoy?’” Dr. Constantine said. “‘Is it entangled in fishing … Read more
An international team of astronomers on Wednesday unveiled the most compelling evidence to date that dark energy — a mysterious phenomenon pushing our universe to expand ever faster — is not a constant force of nature but one that ebbs and flows through cosmic time. Dark energy, the new measurement suggests, may not resign our … Read more
The folk song “Frog Went a-Courtin’” recounts the efforts of a sword- and pistol-toting frog to woo a mouse, who warns him that without the consent of her Uncle Rat she “wouldn’t marry the president.” The courtship rituals of Darwin’s frogs, in the cool, temperate rainforests of southern South America, are not nearly as conditional. … Read more
For decades, the native iguanas of Fiji and Tonga have presented an evolutionary mystery. Every other living iguana species dwells in the Americas, from the Southwestern United States to the Caribbean and parts of South America. So how could a handful of reptilian transplants have ended up on two islands in the South Pacific, over … Read more