Medical experts around the globe are engaged in vital detective work: to figure out why cancer is increasingly developing among young people. Meanwhile, lifestyle is coming under suspicion as one of the possible contributing factors.

For more than two centuries, our standard of living, measured by our national income, has been the defining measure of economic success, associated with rising incomes, expanding opportunities, and proliferating comforts.

Every spring and fall, billions of birds embark on one of nature's most remarkable journeys. Tiny songbirds cross continents, shorebirds traverse oceans, and raptors ride invisible currents over mountains and deserts.

When you turn on your air conditioning on a hot summer day, it’s easy to forget the vast system of wires, turbines, transformers, substations, and control centers that deliver electricity capable of bringing cool air to you almost instantly.

Imagine an innocent little beetle plodding across the forest floor, hunting for morsels to feed upon. Aha! It spies a cluster of bivalve leaves, each shiny red on the inside and offering an array of tantalizing nectar drops. Eager to explore, it picks its way onto one of the leaves.