Use a cellphone? Love nature? Fear cancer? Then how can you hate science? Epidemics, environment, technology: We’ve got questions for the marathoners running (still?) for prexydent.

For the scientist or wanna-be who’s (almost) got it all: We scour the planet to find ancient wood, ancient-er ice, and a bamboo microscope. Dive into our holiday gift catalog slide-show!

By marketing to billions of lower-income people, business can do well by doing good: Affordable green goods for “the base of the pyramid” could improve lives and cut environmental damage. Could this work?

Most music is built on the 12-tone “chromatic” scale. Does this reflect chance, or the basic structure of the human voice? New study finds tight link between pronunciation and musical scale.

The ancients used fire to cook, smelt metal and make pots. It provided warmth, protection against animals, and became a social focus. Fire changed who we are. Could this explain the enduring allure of fire?

U.S. gets “bad report card” on educational progress. Are video games part of the problem — or could they be part of the solution? What do we know about the use of video games in the classroom?

It’s a fact of life: Hurricanes and floods happen. So why are people rebuilding in the path of storms and floods? Is there a smarter way to plan development?

Coal ash is a giant garbage problem. Should we recycle more ash into concrete? A new process might save cement, rock, and landfill space.

Want to make alternative fuel? Need to get electricity directly from organic slop? Bacteria may have the perfect answer.

How do dragonflies fly? How do bats catch insects hidden behind leaves? How do you make a temperature of 2 billion degrees? Why would anyone care?