How worrying is it that more and more teens are using e-cigarettes?
Many are alarmed by the fast-rising popularity of vaping among teenagers in the US. But experts are divided on whether e-cigarettes should be more tightly regulated
Brazil’s next president threatens the people and forests of the Amazon
Jair Bolsonaro’s victory in Brazil’s presidential election could be a disaster for the Amazon, but his opponents can unite, say Mary Menton and Felipe Milanez
World’s first figurative art is of an unknown animal in Borneo
A red animal painted on a cave wall in Borneo more than 40,000 years ago is the oldest drawing of a real-life object ever discovered
Destroying a type of cloud may help stabilise climate change
Wiping out high-altitude cirrus clouds might be the best way to artificially cool the climate by geoengineering the planet
Finland’s long, hard road to creating a circular economy
A visit to a state of the art rubbish dump serving Helsinki shows that even in the greenest of nations, tackling waste is a complex problem
The Kepler spacecraft is dead but its planet-hunting legacy lives on
On 30 October, NASA announced that the Kepler planet-hunting spacecraft is being shut down. Over almost a decade, it changed our views on our place in the universe
The first detailed look at how Elon Musk’s space internet could work
Elon Musk has revealed little about his plans to provide internet from space, but a new simulation shows how it could work and who will be able to afford it
A meat tax may save thousands of lives and millions of dollars
A study suggests that a special tax could reduce meat consumption and prevent 220,000 deaths a year worldwide
More than 60 prescription drugs are getting into river foodchains
Dozens of common pharmaceuticals have been detected in Australian aquatic wildlife, suggesting an urgent need for improved wastewater purification processes
Hormone helps regrow frog legs and may one day lead to a human therapy
Frogs partly regrew their hind legs after a dose of the female sex hormone progesterone was applied to the wound site for just one day