Shadows of two failed searches loom over physics

Scientists, like athletes, are obsessed with experiencing the thrill of victory. Just as they fear the agony of defeat. And in the wide world of science, thrills make news much more often than the agony. Winners get the publicity, losers can’t get published. But sometimes the defeats deserve to make news too, especially when highly […]

Arctic kelp forests may create summer refuges from ocean acidification

During long summer days, kelp forests in high-latitude waters could create little safe zones for sea creatures in acidifying oceans, new research shows. Sunlight stretching on for most or all of a day keeps kelps and other big algae working overtime, trapping solar energy through photosynthesis. In the Arctic, kelps pulled enough carbon dioxide from […]

World’s largest reindeer population may fall victim to climate change

Whether you call them caribou or reindeer, Rangifer tarandus around the world are on the decline. There are about 2.5 million of these animals scattered in more than 20 populations across the Arctic, and most of those populations are shrinking. And scientists largely don’t know why. Count the world’s largest population of reindeer, occupying the […]

Warming could disrupt Atlantic Ocean current

Spewing too much carbon dioxide into the atmosphere could shut down the major ocean current that ferries warm water to the North Atlantic, new climate simulations suggest. While not as extreme as the doomsday scenario portrayed in the movie The Day After Tomorrow, such a shutdown could cause wintertime temperatures to plummet by an estimated […]

It takes guts for a sea spider to pump blood

NEW ORLEANS — A newfound way of delivering oxygen in animal circulatory systems depends mostly on food sloshing back and forth in the guts. This discovery came in sea spiders, or pycnogonids, which can look like legs in search of a body. Their spookily long legs hold stretches of digestive tract, which wouldn’t fit inside […]

New ‘smart’ fibers curb fires in lithium-ion batteries

Hoverboards and certain cell phones powered by lithium-ion batteries occasionally go up in flames. Scientists now have a new plan for squelching these fires before they flare out of control: incorporating a flame retardant in the battery that’s released if temperatures get too toasty. Within lithium-ion batteries, ions travel between positive and negative electrodes through […]

Devastation detectives try to solve dinosaur disappearance

Below the shimmering turquoise waters of Mexico’s Yucatán Peninsula lies the scene of a prehistoric mass murder. In a geologic instant, most animal and plant species perished. Drilling through hundreds of meters of rock, investigators have finally reached the footprint left by the accused: Earth’s most notorious space rock impact, Chicxulub. The dinosaur killer. Sleuthing […]

Dragonfish opens wide with flex neck joint

Dragonfish are the stuff of nightmares with their oversized jaws and rows of fanglike teeth. The deep sea creatures may be only several centimeters long, but they can trap and swallow sizable prey. How these tiny terrors manage to open their mouths so wide has puzzled scientists, until now. In most fish, the skull is […]

New data fuel debate on universe’s expansion rate

A new estimate of how fast the universe is expanding supports one side of an ongoing debate, favoring a more rapid expansion. Observations of type 1a supernovas imply a faster expansion rate (known as the Hubble constant) than studies of the cosmic microwave background — light that originated early in cosmic history (SN: 8/6/2016, p. […]