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Science + Tech – Articles, Analysis, Opinion

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Just 20 amino acids for chains in various combinations to create the thousands of varieties of proteins in our body. David Goodsell/ProteinDatabase

What is a protein? A biologist explains

A biologist explains where proteins come from and what role the 20,000 or so proteins in your body play in keeping you alive and kicking.
Parler is similar to Twitter but doesn’t control or discourage hate speech or calls to violence. OLIVIER DOULIERY/AFP via Getty Image

Big Tech’s rejection of Parler shuts down a site favored by Trump supporters – and used by participants in the US Capitol insurrection

Millions of supporters of Donald Trump flocked to the far-right social media platform, where hate speech and calls for violence thrive. The US Capitol insurrection could be the platform’s undoing.
The Wi-Fi symbol, like the technology it represents, has become ubiquitous. Smith Collection/Gado via Getty Images

How does Wi-Fi work? An electrical engineer explains

Wi-Fi has become a fundamental part of modern digital life, but its foundation is the same as the technology that allowed your great-grandparents to listen to their favorite radio programs.
Saved from the trash heap and ready for transformation. Nathan Shaiyen/Michigan Tech

How to turn plastic waste in your recycle bin into profit

Consumers can turn plastic waste into valuable products at minimal cost using the open source technologies associated with DRAM – distributed recycling and additive manufacturing.
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

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.