Health
US offers world’s first legal recreational marijuana
From 1 January, residents of Colorado aged 21 or older became the first people in the world able to buy pot for legally sanctioned recreational use
Regulars
Humans
Texas repels creationist threat to biology textbooks
News
Environment
Want to fix US inequality? Begin with worming tablets
Opinion
Environment
America’s hidden epidemic of tropical diseases
News
Technology
Play video games to help military secure its software
News
Earth
Shrimp crash forces first fishery closure for 35 years
News
Space
How the US and China can help each other in space
Opinion
Technology
‘Soft’ biometrics is the new way to monitor people
News
Earth
Climate change’s influence on tornadoes is a mixed bag
News
Health
Options running out for the US death penalty
With lethal injection drugs in short supply, state prison systems are turning to untested methods and questionable suppliers
News
Health
Genetic clue to high heart risk of black Americans
News
Technology
NSA snoops tech companies’ fibre-optic networks
News
Earth
Little bugs on the prairie: the key to happy grassland
News
Earth
Sardine disappearance was foreseen but ignored
News