The creaky noise known as vocal fry that people generally associate with young women – and some find irritating – is actually more common in men

Partially burnt trees still standing after a wildfire are typically felled and burned, but a US start-up claims burying them instead will trap the carbon underground for centuries

Seismic surveys and sediment cores suggest that dozens of deep pockmarks on the sea floor were created when Arctic methane stores were disrupted by climate change after the last glacial maximum – and scientists warn it could happen again

Muscle stem cells, which are crucial for building new muscle, don’t work as well as we get older, but giving them an artificial boost could rejuvenate them

A Neanderthal tooth shows clear signs of human intervention to treat bacterial decay, showing that the earliest dentistry began at least 59,000 years ago

A study of soils around the Arctic and boreal forests has found that some wildfires are releasing carbon stored over millennia, meaning higher CO2 emissions than assumed