Texas endured its driest year ever in 2011, and southern Alabama and Georgia have continued to suffer serious drought in 2012. Climate change is predicted to make drought more frequent in the southern United States, putting a strain on groundwater resources. This visualization reveals the freshwater stores that NASA's GRACE (Gravity Recovery and Climate Experiment) satellite detects from space and shows how that data can be used to evaluate groundwater gains and losses, critical information in the effort to conserve the water that people depend upon. For background information, educational resources, and more, visit Water Underground on the Science Bulletins Web site: http://www.amnh.org/sciencebulletins/
Solve the mystery of the sick killer whales. Send questions to a marine biologist. Explore the secrets of the ocean realm. And learn how to protect the world's waters with this library of links.
Article, Online Resource
When a Catholic priest—cosmologist first proposed that the universe began as a "primeval atom," it seemed preposterous. Yet, within a few years, his theory had helped revolutionize cosmology.
Essay, Seminars on Science
Whales abandoned dry land over 50 million years ago to recolonize the sea. And they look nothing like the ancestors they left behind. Take a closer look at their extraordinary transition.
Earth's ice sheets are rapidly losing volume as humans have warmed the Arctic by over 2 degrees Celsius in the past 50 years. Could Greenland really unfreeze? And what might happen if it does?
Mount St. Elias, the third-highest peak in North America, is among the fastest growing ranges in the world, rising 3 to 4 millimeters a year. Find out what this natural laboratory is helping scientists learn about mountain building.
Pick one activity, one article—or use all units to teach your students about plants, arthropods, or both. This curriculum teaches kids about the natural world by taking them into backyards, gardens, vacant lots, and even cracks in the sidewalk to practice observation, identification, and analysis.
These teaching case materials show the fieldwork of an international team of scientists working to provide Bangladeshi leaders the tools they need to understand and minimize geologic risks.
Do your students think the age of exploration is over? Show them the shocking truth: the age of exploration has barely just begun at the ocean floor! Introduce your students to the incredible under water environment of the deep sea vents.