Residents in Blossburg, Pennsylvania are bringing the Tioga River back to life after 200 years of acid mine drainage.

Best wet season in decades gives life to living medicine cabinet. After a particularly wet season, wildflowers and other plant life along the Darling-Baaka River have flourished in numbers not seen for decades, according to local Barkindji and Malyangapa tour guide Dave Doyle.

Three decades of work to restore one of Australia's most degraded catchments. Community effort transforms a degraded waterway, reducing erosion, increasing fish breeding and improving the quality of water that flows into the Great Barrier Reef.

Once-in-a-lifetime discovery found in cave hidden beneath paddock. There are very few places on Earth that remain untouched and unseen by humans. For true explorers, the final frontier is not a distant speck in the sky, it is the underground realm beneath our feet. (Buchan, in East Gippsland, in Victoria, in Australia)