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Animals

For glass frogs, moms matter after all

Brief but important maternal care may have evolved before the elaborate egg-tending of glass frog dads.

Health & Medicine

Getting dengue first may make Zika infection much worse

Experiments in cells and mice suggest that a previous exposure to dengue or West Nile can make a Zika virus infection worse.

Planetary Science

Extreme gas loss dried out Mars, MAVEN data suggest

Over the planet’s history, the Martian atmosphere has lost 66 percent of its argon and a majority of its carbon dioxide, according to data from NASA’s MAVEN spacecraft.

Paleontology

New tyrannosaur had a sensitive side

Tyrannosaurs may have had sensitive snouts that detected temperature and touch.

Animals

Mosquito flight is unlike that of any other insect

High-speed video and modeling reveal a more complex understanding of mosquito flight.

Oceans

Thinning ice creates undersea Arctic greenhouses

Arctic sea ice thinned by climate change increasingly produces conditions favorable for phytoplankton blooms in the waters below, new research suggests.

Astronomy

Asteroid in Jupiter’s orbit goes its own way

Asteroid shares Jupiter’s orbit around the sun but travels in the opposite direction as the planet.

Genetics

Gene editing of human embryos yields early results

Gene editing in embryos has started in labs, but isn’t ready for the clinic.

Neuroscience

Sarcasm looks the same in the brain whether it’s words or emoji

Sarcasm via winking emoji affects the brain like verbal irony does.

Astronomy

Supermassive black hole gets kicked to the galactic curb

Gravitational waves may have given a supermassive black hole a big kick, with enough energy to send it flying toward the edges of its host galaxy.

Health & Medicine

Spray-on mosquito repellents are more effective than other devices

To avoid mosquito bites, stick with spray-on repellents and skip the bracelets and citronella candles, a new study says.

Neuroscience

Math-anxious brains tackle simple problems differently

An fMRI study found more variable brain activity in people who get nervous about math problems.