All Stories by Sid Perkins
- Paleontology
Old Colonies: Ancient formations are termites’ legacy
New analyses of mysterious pillars at two sites in southern Africa suggest that the sandstone features are petrified remains of large, elaborate termite nests.
- Earth
Catching Waves: Ocean-surface changes may mark tsunamis
A new theoretical model that describes a tsunami's interaction with winds may explain enigmatic observations associated with the waves and could lead to a technique for spotting them long before they hit shore.
- Paleontology
Early Flight? Winged insects appear surprisingly ancient
New analyses of a fossil suggest that winged insects may have emerged as early as 400 million years ago.
- Earth
Ancient whalers altered arctic lakes
Analyses of sediment and water samples taken from an arctic lake indicate that an ancient whaling community left a mark on the lake’s ecosystem that persists today, even though the settlement was abandoned more than 400 years ago.
- Chemistry
Nitrogen Unbound: New reaction breaks strong chemical link
Researchers have developed a new way to turn nitrogen into ammonia that could improve upon an energy-intensive, 90-year-old method used to make fertilizers.
- Physics
Solid-state insights yield physics Nobel
The 2000 Nobel Prize in Physics went to three scientists and inventors whose work laid the foundation of modern information technology, particularly through their invention of rapid transistors, laser diodes, and integrated circuits.
- Earth
Ice-dammed lakes had cooling effect
New computer simulations suggest that massive lakes in northern Russia—formed when an ice sheet blocked the northward flow of rivers about 90,000 years ago—significantly cooled the region's climate in summer months.
- Earth
Warming climate may slam many species
Expected increases in global temperature could eradicate from a sixth to a half of the plant and animal species across large areas of the globe, a new analysis suggests.
- Earth
Air held oxygen early on
Chemical analyses of South African sediments suggest that oxygen was present in small quantities about 2.32 billion years ago, which is at least 100 million years earlier than previously thought.
- Earth
Scooting on a Wet Bottom: Some undersea landslides ride a nearly frictionless slick of water
New computer simulations suggest that hydroplaning may be responsible for the unexpectedly large distances traversed by some undersea avalanches.
- Paleontology
L.A.’s Oldest Tourist Trap
Modern excavations at the La Brea tar pits are revealing a wealth of information about local food chains during recent ice ages, as well as details about what happened to trapped animals in their final hours.
- Earth
Two microbes team up to munch methane
Aggregates of two different microorganisms in methane-bearing ocean sediments collected off the Oregon coast appear to collaborate to consume methane despite a lack of oxygen.
