News in Brief
- Health & Medicine
New dietary guidelines emphasize big picture
Americans’ new guidelines for healthy eating focus on subtle shifts to dietary habits.
- Astronomy
This black hole is an extreme recycler
A cosmic pump powered by a supermassive black hole is recycling gas through a galaxy.
- Chemistry
Experiment offers glimpse at how to make hydrogen metallic
A new phase of hydrogen could represent the stepping stone for transforming element 1 into a metal.
- Chemistry
Four elements earn permanent seats on the periodic table
The four newest elements on the periodic table gain official recognition and will be getting new names soon.
- Planetary Science
Equipment failure delays Mars mission
A leaky instrument will push back launch of the Mars InSight lander by at least two years.
- Tech
SpaceX rocket sticks its landing
A Falcon 9 rocket section lands after launching a set of satellites during a successful test of SpaceX’s reusable rocket parts.
- Agriculture
Number of wild bees drops where they’re needed most
Wild bee abundance in the United States is lowest in agricultural regions, according to a new model.
- Physics
Pulsar pair ripples spacetime
A pair of pulsars gives scientists the best evidence so far for gravitational waves, which have yet to be detected directly.
- Climate
Why some rainbows are all red
Red rainbows are caused by the position of the sun in the sky, appearing more often during sunrise and sunset, new research finds.
- Life
Upending daily rhythm triggers fat cell growth
Constant production of stress hormone spurs fat growth.
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- Planetary Science
Ancient Mars’ weather report: Continued cold and dry
The assortment of water-carved features on the Martian surface suggest that ancient Mars was cold and fairly dry, not warm and wet.
