Hunter-gatherers get less sleep than people in industrial societies
Members of the Himba community in Namibia get just 5.5 hours of sleep a night on average Nick Fox / Alamy Much has been written
Hair conditioner made from wood is black and smelly, but eco-friendly
The black hair conditioner on the left is derived from the wood powder on the right Fengyang Wang/Stockholm University This sustainable, wood-based hair conditioner may
USAID funding freeze devastates reproductive healthcare worldwide
Women lining up at a mobile tent for reproductive health services at a clinic in Zimbabwe MSI Zimbabwe/Arete/Tendai Marima The day Donald Trump took office
Earth wouldn’t have ice caps without eroding rocks and quiet volcanoes
Antarctic ice on 1 Jan 2024 NASA’s Scientific Visualization Studio Earth’s climate isn’t easy to cool down – especially if you want it cold enough
Carbon-neutral hydrogen can be produced from farm waste
Farm waste could be turned into hydrogen fuel ImageryBT/Shutterstock Hydrogen could be made using agricultural waste under a new production process that uses less energy
How the XB-1 aircraft went supersonic without a sonic boom
The experimental supersonic aircraft XB-1 Boom Supersonic When the experimental XB-1 aircraft broke the sound barrier three times during its first supersonic flight on 28
Astronomers have spotted the largest known object in the universe
Artist’s illustration of the large-scale structure of the universe Science Photo Library/Alamy Astronomers have found the largest known structure in the universe. It is 1.4
Is cleaner air accelerating global warming more than we expected?
Air pollution can have a cooling effect on the climate Cheunghyo/Getty Images James Hansen, the climate scientist best known for alerting the US Congress to
Salamanders fill their toes with blood to release sticky grip
The translucent toes of a wandering salamander William P. Goldenberg How salamanders manage to move around on uneven, vertical tree surfaces with such dexterity has
Why it’s a terrible time for RFK Jr to lead US health policy
Robert F Kennedy Jr testifying during his confirmation hearing on 29 January Win McNamee/Getty Images Robert F Kennedy Jr has been a controversial figure in