Were Clovis foragers in Late Pleistocene North America big-game hunters, or just big-game scavengers?

There are currently 15 well-documented Late Pleistocene localities in North America in which Clovis points are found ...

TESS just found a planet in a new way—and more may be hiding in its eight years of data

For the first time, NASA's TESS (Transiting Exoplanet Survey Satellite) mission has identified a planet orbiting a distant star thanks to its warping of space-time. Unlike the star-hugging transiting ...

Ancient gum disease may have helped reshape jaws before human brains expanded

Human evolution is generally explained through changes in brain size, locomotion or tool use, but new research from Wits University suggests that gum disease and changes in facial structure may have ...

Walkable, greener neighborhoods linked to better physical and mental health across the U.S.

A new big-data analysis of the U.S. pinpoints how urban design aids the health of city residents—especially when cities provide walking opportunities, greenery and mixed-use streets with a blend of ...

Baker's yeast shows potential in treatment of persistent fungal infection

Millions of women worldwide suffer from vaginal yeast infections. These infections are most commonly caused by the fungus Candida albicans and can lead to symptoms ranging from itching and burning to ...

New research shows why startups may be learning the wrong lessons from customers

A study by ESMT Berlin shows that startups often learn the wrong lessons when entering a market if they do not coordinate pricing, advertising and inventory decisions. The researchers show that ...

Portugal braces for high temperatures in new heat wave

Parts of Portugal, including the Lisbon region, will be placed on red alert after being relatively spared from Europe's worst heat wave, which set records in several countries.

Oppressive heat broils US during World Cup, July Fourth

Blistering temperatures and humidity gripped swaths of the United States on Wednesday, with the worst yet to come for the densely populated East Coast as the nation co-hosts the World Cup and prepares ...

How mating competition, age and sex shape immune systems in wild bats

A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...

When parasites stop having sex, they may become less picky about their hosts

A new evolutionary theory suggests that some asexual parasites may temporarily be able to infect a wider range of hosts as harmful genetic mutations build up. In a paper published in Trends in ...

Grasslands could lose four times more carbon uptake under future drought conditions

The effects of individual climate factors on ecosystems are usually considered in isolation. However, in reality, they occur ...

DNA-based nanoswitch can flip in milliseconds and stay in one state for days without continuous forcing

Scientists have engineered a nanoscale switch using DNA "origami." Inspired by macroscale mechanical switches, the device achieves long-term functionality without the continuous forcing mechanism that ...