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Physical World

Thar she blows: The what, why and where of geysers

Scientists make progress in mapping the hidden force behind the watery eruptions

Microbes in the medical bag

Genetically engineered gut bacteria hold promise for safe, targeted therapies

The truth in baby teeth

Fossilized remains of children have a lot to tell us about their short lives

The complex riddles of rheumatoid arthritis

Latest therapies control the inflammatory disease for many but not all. Scientists are investigating the roots of the variability and what to do about it.

Coffee declared healthy (for most) — yay!

A comprehensive, full-bodied analysis is brimming with encouraging data

Climate change can set the stage for violence

Worsened by global warming, drought and other environmental stressors play a role in fanning the flames of civil conflicts

Snot what you think: The unknown toll of chronic sinus problems

A not-so-simple affliction of the sinuses engenders misery, $8 billion in yearly costs and overuse of antibiotics

Norovirus: The Perfect Pathogen

It’s easy to get, but difficult to study or treat. Scientists are making progress against the virus thanks to an infusion of cash and a new way of culturing it in the lab.

Cracking life’s code

We think we know DNA, but little progress has been made in understanding the evolution of how it encodes proteins

Balance, not carbs or fat, is the key to healthy eating

An expert’s view on a common-sense diet: Don’t fuss over details, and put more plants on the plate

Alzheimer’s holds science at bay

A summary of “Update on Alzheimer’s Disease Therapy and Prevention Strategies” by W. Vallen Graham and coauthors, in the 2017 issue of the Annual Review of Medicine

Getting it ripe

From meh to wow: The science of fruit maturation reveals new paths to better flavor