Osha Gray Davidson

Osha Gray Davidson has been an investigative reporter for 25 years and is the author of six books of nonfiction. He publishes the online journal The Phoenix Sun covering solar power.

Solar Impulse’s U.S. adventures, in photos

The all-solar plane has already made it from the Bay Area to Phoenix. Check out pictures from the first leg of Solar Impulse's historic trip across America.

Solar plane crosses U.S., injects sexiness into the green conversation

Solar Impulse has the wingspan of Boeing 747 but weighs only as much as a Subaru Outback. It shows that environmentalism is anything but boring.

The Prius C: Not a swan, but a damn fine duck

Meet the newest addition to the Prius family, and find out how well it performs.

Solar power’s 'nasty little secret' isn’t nasty or secret

A solar insider reveals that "solar panels don't work well." But this ill-timed and inaccurate charge could be just a ploy to boost his own business.

Will the Camry Hybrid help Toyota get its groove back?

After suffering recalls, an earthquake, and a tsunami, the maker of the ever-popular Prius pins its hopes for rebirth on a new green model: the Camry Hybrid.

Worried about radiation in breast milk? Still best to keep breast-feeding

How can we best protect the wee ones?For survivors of Japan’s devastating earthquake and tsunami, there have been so many concerns: access to clean water and food, the need for shelter, the threat of disease. It’s the same awful list …

Scoop: word analysis reveals GOP secret Senate strategy

Here's a document WikiLeaks doesn't have: a so-called "word cloud" produced by sophisticated word-frequency-analysis software, only available on the internets.

The solar ninja uprising

A dozen black-clad solar ninjas converged at the Solar Power International conference to protest Prop 23 and rally other solar companies against it.

The best books about the deep blue sea, just in time for World Oceans Day

All reading lists are incomplete and arbitrary. This is especially true of a list limited to a dozen works about the ocean, the blue immensity that comprises 71 percent of our planet. So take this list with a grain of …