Plant species grafted together can swap DNA via energy-catching organelles. See “Plants swap chloroplasts via grafts.”
Social networks can spread users’ emotions. Learn more in “Catching a mood on Facebook.”
ATOM & COSMOS
A solar flare set off auroras around the Arctic Circle. See “Solar storm.”
BODY & BRAIN
Protein-based disease agents can jump species. Read “Prions more mobile than thought.”
Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.