It’s the new year, and many of us are thinking about how to shed those few extra pounds gained during the holiday season or are committing to staying healthy with regular exercise. A nutrition scholar explains the biology of metabolism and answers a common question: Can I do anything to speed up my metabolism?

Also this week, a medical researcher who studies the health effects of air pollution from Southern California reports his latest findings showing the link between dementia and exposure to fine particulate matter produced by vehicles and power plants.

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Martin La Monica

Deputy Editor

Why does it seem like some people can eat anything and not gain a pound while others are the opposite? Heide Benser/The Image Bank via Getty Images

Whether slow or fast, here’s how your metabolism influences how many calories you burn each day

Terezie Tolar-Peterson, Mississippi State University

There are some factors you can't change about your metabolism. But there are things you can do to influence how much energy your body uses over the course of the day.

Air pollution exposure during mid to early life may be more important to developing Alzheimer’s disease than doctors realized. Cecilie Arcurs via Getty Images

Air pollution may contribute to Alzheimer’s and dementia risk – here’s what we’re learning from brain scans

Jiu-Chiuan Chen, University of Southern California

The tiny air pollutants known as PM2.5, emitted by vehicles, factories and power plants, aren’t just a hazard for lungs. A study finds more brain shrinkage in older women exposed to pollution.

Federal government agencies, from the Treasury Department to the National Nuclear Security Administration, have been compromised by the attack. Tasos Katopodis/Getty Images

The Sunburst hack was massive and devastating – 5 observations from a cybersecurity expert

Paulo Shakarian, Arizona State University

Cyberwarfare is more like cancer than bombs and bullets. Cybersecurity experts are just beginning to make their diagnosis of the Sunburst hack.

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