Wednesday, 8 February, 2012

What was the long-term impact of the Exxon Valdez spill in Alaska? Did the cleanup help, or make matters worse? Who are you going to believe in a case like this?

Protecting small fish may cause a genetic change that promotes slow-growing fish. Is it smarter to protect the large fish instead?

Alien earthworms are killing trees in northern deciduous forests. Are fishing people to blame?

Wildfires can be helpful. Controlled burns are key to restoring habitat for the Northern Idaho ground squirrel.

Study finds that many fish are getting more common; blames state fish-stocking efforts for the homogenization.

Stray light interferes with the work of astronomers — and it’s a waste of energy. How to stop light pollution.

World population has reached 6 billion. What does this mean for the environment, resources, humanity? Six billion people on Earth — is that a good thing?

What causes beach erosion, and what can we do about it? Do groins and jetties help or hurt? How will shorelines change as the sea continues to rise due to global warming?

Why do students kill?

Are synthetic chemicals causing hormonal chaos? Pesticides, PCBs, dioxins, plastics can all mimic natural hormones. What does the evidence say, and what should we do about it?