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The global soda tax experiment

An increasing number of cities and countries have begun taxing sugary beverages. But can raising the price of these drinks really make a dent in obesity, diabetes and other ailments?

Revenge is bittersweet at best

Research is starting to reveal how the urge for vengeance may have evolved, when it can be useful and what could prevent the violence it can provoke

The quest for better baby formula

Replicating human milk is no easy feat — nor is separating the science from the hype

Lessons from scorching hot weirdo-planets

Hot Jupiters were the first kind of exoplanet found. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general.

An amphibious rescue mission

On the edge of extinction, rare frogs and toads need more than a little love to reproduce. High-tech help, from IVF to hormone therapy, may save them.

What electronic games can teach us

Digital play can enhance certain types of learning, but how to harness that potential for the classroom remains a prize question

How a poisonous plant became breakfast, lunch and dinner for monarchs

By engineering mutations into fruit flies, scientists reconstructed how the butterflies may have evolved resistance to the toxins found in milkweed, allowing their caterpillars to feast on the plant

How maternal mood shapes the developing brain

Stress and anxiety during pregnancy can mean a higher risk of offspring developing ADHD, depression or other conditions. Medical psychologist Catherine Monk explains how prenatal mental care benefits mothers and babies.

Fast facts about freshwater mussels | Things to Know

VIDEO: The humble bivalves can clean polluted water and bump up diversity — but there's plenty more to learn about the odd group of mollusks that make their homes in our streams and rivers