The hard truths of climate change — by the numbers
A set of troubling charts shows how little progress nations have made toward limiting greenhouse-gas emissions.
Debating the bedrock of climate-change mitigation scenarios
Researchers and policymakers rely on computer simulations called integrated assessment models to determine the best strategies for tackling climate change. Here, scientists present opposing views on the suitability of these simulations.
First hint that body’s ‘biological age’ can be reversed
In a small trial, drugs seemed to rejuvenate the body’s ‘epigenetic clock’, which tracks a person’s biological age.
How nuclear scientists are decoding Russia’s mystery explosion
Isotopes that caused a radiation spike earlier this month probably came from an exploding nuclear-reactor core — but device’s application is still unknown.
Ancient stone tools hint at settlers’ epic trek to North America
16,000-year-old artefacts discovered in Idaho could be the oldest ever found on the continent.
Alarming surge in drug-resistant HIV uncovered
The drug-resistant form of the virus has been detected at unacceptable levels across Africa, Asia and the Americas.
Japan approves first human-animal embryo experiments
The research could eventually lead to new sources of organs for transplant, but ethical and technical hurdles need to be overcome.
How a data detective exposed suspicious medical trials
Anaesthetist John Carlisle has spotted problems in hundreds of research papers — and spurred a leading medical journal to change its practice.
The plan to mine the world’s research papers
A giant data store quietly being built in India could free vast swathes of science for computer analysis — but is it legal?
Hallucinations implanted in mouse brains using light
Behavioural evidence suggests that targeting just 20 neurons prompted animals to ‘see’ an image.