Every 9.5 minutes, another person in the US is infected with HIV (pictured). Today, the Obama administration announced a plan to reduce that number by 25% in 5 years — or about one person every 12 minutes — a goal officials say is as aggressive as it is realistic. Read more
Creating hybrids by crossing closely related species of plants is common pratice in horticulture, but when it comes to chorus frogs such hybridizations can be maladapative, a new study shows. Read more
Besides behavioural immaturity and experimental curiosity, the teenage years are also marked by brain development—making the rise of adolescent binge drinking particularly worrisome to neuroscientists. Read more
The Alaotra Grebe (Tachybaptus rufolavatus) was a water-loving bird who lived in a tiny area in east Madagascar. It had small wings and fed on fish in its large, brackish lake home. It was declared extinct on Wednesday, 26 May
This summer, students at the University of California, Berkeley, will be asked to swab the inside of their cheeks and experience personalized medicine for themselves—but this gigantic and unprecedented experiment is not without its critics.
A century ago, the Asian vine kudzu was introduced to the southeastern US where its deep roots were thought to be helpful for erosion control. Since then the invasive species has been swallowing landscapes and altering ecosystems, and now it appears that the horrible plant increases air pollution as well. Read more
This week, scientists have announced not one, but two new nanorobots known as “DNA walkers” that could do what Ms. Frizzle and her elementary school class did on our television screens: they can move across the chemical blueprint of life.