Topic: Appalachian National Scenic Trail

Thirty ideas from people under 30: The Environmentalists

They are explorers and activists, artists and educators, farmers and faith leaders – even mayors. And they have trenchant suggestions on how to improve the world.

Anthony Weiner: Were his dreams of being mayor just Twittered away?

It's clear Anthony Weiner wants to be mayor of New York. Just as clear, say analysts, is that 'Weinergate' will arm his political rivals for years to come, and isn't likely to 'just go away.'

Nikki Haley: Fresh face for South Carolina or more of the same?

Polls suggested Nikki Haley was the front-runner heading into Tuesday's South Carolina Republican gubernatorial primary. But controversy is already hounding the avowed reformer – something voters had hoped would be leaving office with current Gov. Mark Sanford.

S.C. Gov. Mark Sanford is censured, but won't be impeached

A panel of lawmakers voted to rebuke South Carolina Gov. Mark Sanford for disgracing the office, but stopped short of impeachment. Sanford says he won’t resign, vowing to fill out his term through 2010.

Saving wildlife in a warmer world

A warmer world will have adverse effects on wildlife. We can help save animals, but it will take savvier approaches, scientists say.

Is Mark Sanford about to leave? Stay tuned.

Fellow Republicans – including the lieutenant governor, the House speaker, and most lawmakers – have called for his resignation. He'll speak later Thursday.

Maine’s windkeepers: From ship masts to windmills

Today, winds help turn on the lights, run TVs and power washers, dryers and ovens in thousands of homes all over New England.

Uh-oh, Governor Sanford returns from another vacation...

When has a book inspired you to action?

The Sanford affair: a day-by-day account

South Carolina’s Houdini governor had often given security the slip. But his audacious Argentine tryst was unwittingly foiled by a fellow Republican.

Sanford returns home to impeachment rumblings

Did South Carolina's missing governor commit a 'serious offense' by going underground in Argentina?

Sanford's affair: a distraction the GOP doesn't need

Sex scandal engulfing South Carolina's governor may keep Republicans from focusing on their real task: to define an alternative vision to Obama's.

Live blogging Mark Sanford's weird press conference

Ensign receives round of applause (for apologizing, not affair)

Sanford disappears to hike Appalachian Trail (on Naked Hiking Day)

America's future wind web?

Wind power could feed 20 percent of the US energy diet. But first, the country needs a new energy network.

A Walk In the Woods

Etc.

Bid to allow guns in national parks

The Interior Department considers a proposal to lift a 25-year ban on concealed weapons in national parks.