See the sound a helicopter makes caught on camera
The way helicopter rotor blades produce their characteristic noise has been photographed for the first time, in a bid to make the craft run more quietly
Killing cancer with fever: An old therapy revisited
Using infections to turn the immune system against cancer cells is a 100-year-old technique. Cell biologist Uwe Hobohm is trying to update it for today
What Colorado's cannabis experiment will teach us
Researchers are hoping to gather unprecedented data on how people buy and use legal cannabis, and the impacts on health and the black market
Mantis shrimp's darting eyes ape the way primates see
Humans use rapid eye movements to lock on to new objects, and now it seems mantis shrimp do the same – a trait that could help them hunt
Learning drugs reawaken grown-up brain's inner child
A drug for perfect pitch is just the start: mastering new skills could become easy if we can restore the brain's youthful ability to create new circuits
Huge cosmic voids could probe dark energy
Despite being vast expanses of nothing, voids in the universe could lead us to a new theory of gravity – and give a clue to dark energy's nature
Hydrogen fuel cell is new charger for mobile gadgets
Next time your smartphone runs out of juice miles from anywhere, perk it up with a jolt of hydrogen power from a portable fuel cell
Most common exoplanets are weird 'mini-Neptunes'
Planets more than twice Earth's size are likely to be more gassy or wetter than Earth, limiting the places where machine-savvy alien life could develop
Blame slow jet stream for US deep freeze
The real reason for the deadly cold snap paralysing North America this week is a slowdown of the continent's atmospheric conveyor belt
China steps up efforts to combat ivory smuggling
Over half of the world's illegal ivory goes to China, but the government is finally sending a clear message by publicly destroying a haul of seized ivory tusks and trinkets
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