Science commentator Laurie Winkless looks at a new study which finds parts of the Arctic that have stored vast amounts of carbon dioxide are now letting it out, with emissions from wildfires having a big impact on the Arctic's carbon balance.
A new dye created by researchers at Tokyo Metropolitan University could help in cancer diagnoses and a new paper has found bats migrate ahead of approaching storm - surfing the winds and using up less energy to fly.
Laurie Winkless is a physicist and science writer
