Every two years and two months the Earth and Mars line up with the Sun, giving us a relatively close view of the red planet. Cynthia Graber reports.
An economic analysis of the value of sharks for ecotourism alone finds that each individual is worth far more alive than dead for its fins. Steve Mirsky reports
Join the more than 5,000 citizen scientists who are helping researchers identify the songs of individual whales. Mariette DiChristina reports
A figure engraved in the bedrock of a Brazilian cave dates back at least 10,000 years. Cynthia Graber reports
New drivers with more "g-force events," like quick turns and sudden braking, had more crashes and near hits. Amy Kraft reports
Female gelada monkeys spontaneously abort 80 percent of pregnancies by a displaced male when a new male succeeds him. Sophie Bushwick reports
Human oral contraceptives that find their way back into the environment might be having an effect on frog mating. Christopher Intagliata reports
Nonsmokers have stable oral bacterial communities, but smokers' oral bacteria is transient, which opens up real estate for bad bugs. Christopher Intagliata reports
The number of times a paper gets tweeted in the first three days after it's published may predict how often it will be officially cited. Steve Mirsky reports
Fruit flies will purposely ingest alcohol to ward off parasitic wasps. Cynthia Graber reports
Baby goats learn to bleat just like the kids they hang out with. Christopher Intagliata reports
Get weekly coverage delivered to your inbox.
YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription.
