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The FAA raised concerns that new, full-speed 5G cellphone services near airports could interfere with aircraft operations. Bernal Saborio/Flickr

How 5G puts airplanes at risk – an electrical engineer explains

Airplanes use radio waves to determine how far off the ground they are. New 5G cellphone services come close to the same frequencies the airplanes use. Here’s how that can be a problem.
Telecommunications companies around the world are expanding their next-generation, or 5G, networks. Guo Shining/VCG via Getty Images

What is 5G? An electrical engineer explains

5G is 10 times faster than 4G, promising better wireless internet access. It’s also expected to put the Internet of Things revolution in high gear.
A Russian military photo shows Russian soldiers arriving in Kazakhstan on Jan. 7, 2022. Russian Defence Ministry\TASS via Getty Images

In Kazakhstan, Russia follows a playbook it developed in Ukraine

Negotiations between Western democracies and Russia over the fate of Ukraine took place against a backdrop of Russia troops entering Kazakhstan. It’s a reminder that Russia is willing to play tough.
The omicron variant possesses numerous mutations in the spike protein, the knob-like protrusions (in red) that allow the virus to invade other cells. Juan Gaertner/Science Photo Library via Getty Images

Will omicron – the new coronavirus variant of concern – be more contagious than delta? A virus evolution expert explains what researchers know and what they don’t

It’s too early to say whether the newly identified omicron variant is going to overtake delta. But particular mutations in the new strain have researchers deeply concerned.
Incentives like rebates for insulation or allowing homeowners to sell energy from solar panels were more popular than taxing for excess energy use. Lourdes Balduque via Getty Images

Americans support climate change policies, especially those that give them incentives and clean up the energy supply

A set of studies found people prefer incentives to disincentives, especially for individuals but also for businesses. They have views on clean energy and efficiency, too.
Research groups supported by the U.S. BRAIN Initiative recently released the most comprehensive map of cell types in the motor cortex of humans, monkeys and mice. Andriy Onufriyenko/Moment via Getty Images

Mapping how the 100 billion cells in the brain all fit together is the brave new world of neuroscience

Scientists have been mapping the brain for centuries. New visualization tools bring them one step closer to understanding where thoughts come from and new ways to treat neurological disorders.
Gun violence spiked in more than half of all U.S. states in the first 13 months of the COVID-19 pandemic. Pacific Press/LightRocket via Getty Images

Gun violence soared during the COVID-19 pandemic, a new study finds – but the reasons why are complex

The pandemic brought about a sharp rise in mental health concerns, deep unemployment and an unprecedented amount of social isolation – a potentially deadly combination alongside rising gun sales.

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