Earth's Ambipolar Electrostatic Field

Non-paywalled article explaining the discovery.

https://www.bas.ac.uk/media-post/discovery-of-a-long-sought-...

According to wikipedia, 10-15% of Earth's hydrogen escape is in the polar wind, along with most of the escaping helium. Non-thermal helium escape debunks a creationist claim that lack of helium build up in the atmosphere requires a young Earth.