Menace to monarchs

Menace to monarchs
20 years ago, up to 1 billion monarch butterflies wintered in Mexico’s mountains. This January, a few tens of millions are roosting More »

Brewing biofuel

Brewing biofuel
The struggle to make fuel from wastes from farm, factory and forest continues. What’s keeping cellulosic biofuel out of the market? More »

As snow goes, where go the animals?

As snow goes, where go the animals?
Animals like the wolverine evolved to live in the snow, and they excel in conditions that defeat most animals. How will they fare if More »

Stopping the slaughter of the bats

Stopping the slaughter of the bats
In 7 years, white-nose syndrome has spread to 24 states and 5 provinces. Why is the fungus so deadly? Why don’t bats die in Europe? And More »

Bugs for dinner!

Bugs for dinner!
What about farming insects? 2 billion people eat insects, and more should be, according to the UN. As the planet searches for protein More »

Wildfire goes wild in Arizona

Wildfire goes wild in Arizona
As wildfires torch Western states, what is the role of global warming? Does hotter weather contribute to fires? Does the resulting More »

Poaching problem

Poaching problem
As elephant poaching soars, carbon dating, a mainstay of archeology, could be used to date ivory, based on heavy isotopes left over More »