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A drift-prone herbicide called dicamba continues to plague the Midwest, despite promises to end the problem from the chemical's backers. A top seed industry executive now has joined dicamba's critics.

The hordes of fish were killed by a red tide, a large "bloom" of toxic algae that appears on Florida's Gulf Coast about once a year. Experts say the bloom shouldn't be happening right now.

A tiny bird called the Florida grasshopper sparrow is on the brink of extinction. Fewer than 150 are believed to remain in the wild.

Eleven people have died in the massive wildfires that continue to spread in the panhandle of Texas. Michele Norris talks with Kim Powell, the Fire Chief of Pampa, Texas, where four people have died from the fires.

Madagascar lets the big questions about carnivore versus herbivore fall by the wayside in a successful rush for fun and visual entertainment, according to our movie reviewer.

Ten rivers across the country make one conservation group's list of most endangered rivers, including the Ohio River.

A year ago, the Yellowstone River had its biggest flood in 500 years. Now, fishing guides have to learn a whole new river. Fishing sends more than $1 billion to Montana's economy.

When it comes to gasoline prices, President Bush and Congress are talking past each other. The president says the solution is to boost U.S. oil production and refinery capacity. Congressional Democrats say it's time to tax big oil's windfall profits and suspend filling the strategic petroleum reserve.

A new paper says coral bleaching episodes due to climate change have made irreversible changes to the world's coral reefs. The challenge now is to keep them alive with good governance.

The recovery of the bald eagle is bad news for herons, loons and other rare birds. Their numbers are being decimated by eagles who prey upon them.