Статті

Smart windows that go from clear to dark in under a minute

Сер 9 2017

Engineers have developed dynamic windows that can switch from transparent to opaque or back again in under a minute and do not degrade over time. The prototypes are plates of conductive glass outlined with metal ions that spread out over the surface, blocking light, in response to electrical current.

Rewired taste system reveals how flavors move from tongue to brain

Сер 9 2017

By creating mice with mixed-up taste sensors, scientists show how the taste system continually remakes itself.

First winged mammals from the Jurassic period discovered

Сер 9 2017

Two 160-million-year-old mammal fossils discovered in China show that the forerunners of mammals in the Jurassic Period evolved to glide and live in trees. With long limbs, long hand and foot fingers, and wing-like membranes for tree-to-tree gliding, Maiopatagium furculiferum and Vilevolodon diplomylos are the oldest known gliders in the long history of early mammals.

Racial gap in survival after in-hospital cardiac arrest narrows

Сер 9 2017

There has been a substantial reduction in racial differences in survival after in-hospital cardiac arrest, with a greater improvement in survival among black patients compared with white patients, according to a study.

Fruit fly mutation foretells 40 million years of evolution

Сер 9 2017

Small, seemingly insignificant mutations in fruit flies may actually hold clues as to how a species will evolve tens of millions of years in the future.

Incomplete drought recovery may be the new normal

Сер 9 2017

The amount of time it takes for an ecosystem to recover from a drought is an important measure of a drought's severity. During the 20th century, the total area of land affected by drought increased, and longer recovery times became more common, according to new research published by Nature by a group of scientists including Carnegie's Anna Michalak and Yuanyuan Fang.

Extinction mystery solved? Evidence suggests humans played a role in monkey's demise in Jamaica

Сер 9 2017

Radiocarbon dating of a fossilized leg bone from a Jamaican monkey called Xenothrix mcgregori suggests it may be the one of the most recent primate species anywhere in the world to become extinct, and it may solve a long-standing mystery about the cause of its demise. The short answer: human settlement of its island home.

New 13-million-year-old infant skull sheds light on ape ancestry

Сер 9 2017

A new discovery in Kenya of a remarkably complete fossil ape skull reveals what the common ancestor of all living apes and humans may have looked like.

Biochar shows benefits as manure lagoon cover

Сер 9 2017

Manure is a reality in raising farm animals. Manure can be a useful fertilizer, returning valued nitrogen, phosphorus, and potassium to the soil for plant growth. But manure has problems. Odor offensiveness, gas emissions, nutrient runoff, and possible water pollution are just a few. New methods may reduce these negatives while potentially adding some positives: biochar covers.

Successful filming of fastest aurora flickering

Сер 9 2017

Researchers conducted a 3 year continuous high-speed imaging observation at Poker Flat Research Range, Alaska, USA, and identified the physics behind the flickering of aurora. At the same time, they discovered faster flickerings at speeds of 1/60-1/50 and 1/80 of a second.