Melting ice sheets changing the way the Earth wobbles on its axis, says Nasa

'Dramatic' shift in polar motion attributed to effects of global warming and the impact humans are having on the planet

Global warming is changing the way the Earth wobbles on its polar axis, a new Nasa study has found.

Melting ice sheets, especially in Greenland, are changing the distribution of weight on Earth. And that has caused both the North Pole and the wobble, which is called polar motion, to change course, according to a study published on Friday in the journal Science Advances.