Non-paywalled article explaining the discovery.<p><a href="https://www.bas.ac.uk/media-post/discovery-of-a-long-sought-global-electric-field-on-earth/" rel="nofollow">https://www.bas.ac.uk/media-post/discovery-of-a-long-sought-...</a><p>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.