President Obama plans to expand a marine sanctuary off the coast of Hawaii to 582,500 square miles this week. It would then be the largest marine sanctuary in the world.
Researchers say man-made climate change caused by greenhouse gas emissions can be tracked as far back as the mid-1800s, rather than the late 1800s, as previously thought.
The giant clams that produce these record-setting pearls were nearly wiped out several decades ago.
Environmentalists say the tiny microbeads found in shower gel are moving into the water supply and endangering aquatic life, leading some lawmakers around the world to suggest a ban on the plastic beads.
A Delaware-sized chunk of ice could dislodge from the Larson C ice shelf within the next few years, say scientists.
The Crystal Serenity cruise ship is set to become the largest passenger vessel to sail the Northwest Passage with 1,000 passengers, each paying upward of $20,000.
Veteran firefighters say they have never seen fires as hot and strong as those ravaging California this year.
Residents of Shishmaref, Alaska, might finally pack and move, though this is their third vote to relocate as rising sea waters continue to erode the village's shores.
According to a new report, retailers are phasing out bee-harming pesticides in their products.
Global warming may severely limit the potential host cities for Olympic Summer Games in the next 50 years.