John Hitchcock graduated from the University of Toronto with a degree in film studies and previously wrote on his own blog. He also specializes in nature and virtual photography and does art in Source ...

Biological control offers an attractive alternative to chemical molluscicides in the management of pest slugs, with nematodes emerging as promising biocontrol agents. Among these, species within the ...

Add Yahoo as a preferred source to see more of our stories on Google. A tree tunnel in the Puna district of the island of Hawaii, also known as the Big Island. (Peter Unger/Getty Images) The parasite ...