PLANTS

For the first time, scientists have used dried herbarium samples to decode the genome of a plant pathogen and its plant host. The pathogen in question is Phytophthora infestans and its host, the simple potato—a duo responsible for the devastating famine t

Trauma, that’s what. It’s the smell of chemical defenses and first aid. The fresh, “green” scent of a just-mowed lawn is the lawn trying to save itself from the injury you just inflicted.