When Apollo 17 splashed down in the Pacific Ocean on Dec. 19, 1972, it ended an era of manned spaceflight to the moon. The science, however, continues. Armed with analytical techniques not available in the 1970s, researchers around the country have been re-examining the more than 380 kilograms of lunar rocks collected four decades ago during the Apollo missions.

As the Colorado River winds through the Colorado Plateau's soft sedimentary strata, it picks up a tremendous amount of sediment. This sediment - which once left the river's waters so muddy that Spanish explorers christened it El Rio Colorado "the reddish river" - is a vital component to the unique ecosystems of the river. However, with the construction of the Hoover and Glen Canyon dams, which trap the sediment, the once-turbid waters have become a dazzling blue-green, signaling major changes with serious implications for the health of the river's native ecosystems.

Beginning March 1, 2013, the Federal Government's discretionary spending accounts will be cut by $85 billion through the rest of the fiscal year. These across-the-board spending reductions, known as the sequester, were first proposed in 2011 as a penalty so severe they would force Congress to work together to solve the nation's deficit woes. Unfortunately, no agreement on a package of replacement cuts or additional revenue in time to avoid the sequester has been made. We now face substantial cuts to critical programs, and want to know how the sequester is affecting geoscientists.

On June 5, 2012, a massive dock made landfall on Oregon's Agate Beach, just north of Newport. The dock carried with it a host of castaways, including as many as a hundred species of mollusks, anemones, sponges, oysters, crabs, barnacles, worms, sea stars, mussels and sea urchins. A placard on the side written in Japanese revealed that the dock had been unmoored from the Japanese coastal city of Misawa during the catastrophic tsunami on March 11, 2011, bringing with it an essentially intact subtidal community of Asian species to the Pacific Northwest. Although natural rafts have likely been ferrying organisms around the planet since the very beginning of life of Earth, the geologically recent advent of human settlement, culture and infrastructure is fundamentally changing the rafting game, as EARTH explores in our March issue.