Giant viruses evolved from smaller viruses that picked up genes from other organisms, according to a new study. Plus, a look at the search for extraterrestrial intelligence, and the challenges of listening to the stars from a planet filled with radio transmissions. And as incidence of Lyme disease soars, scientists look for answers.
Michael Mann discusses his participation on the latest House Committee on Science hearing on climate change. Plus a visit to the playground where Mars rovers are put through their paces, and how one researcher peers deep inside sneezes to answer questions about disease transmission.
If humans someday colonize the moon and Mars, robotic prospectors and miners will be among the first to arrive, manufacturing fuel, water, and other essentials. Plus technology like 3D printing is expanding what prosthetic limbs can do, and who can wear them.
Geologist Peter Schultz uses a high-velocity gun to test his hypothesis that asteroid impacts could preserve signs of ancient life. Plus, what would happen if you stuck your hand in a particle accelerator or jumped off of the Space Station?
The wildflower explosion in the southern California desert provides plentiful food to wild bees. In this springtime special, we talk about which wildflowers—and pollinators—to spot this season, and how to log your observations at www.inaturalist.org. Plus, mathematician Eugenia Cheng explores infinity.