Exploring Food Chains and Food Webs, An Overview of Photosynthesis. The tearing down of dams across the country has provided salmon with a new lease on life. The Worldwatch Institute issues revealing facts about coal, nuclear, wind, and solar power. Cool Off with Algae Scientists propose that fertilizing the ocean with iron may cause more phytoplankton to grow, thereby counteracting global warming. A new study shows that Beethoven suffered from lead poisoning, which now also affects wildlife.
Scientists call for better tracking of near-Earth objects.
The Biosphere 2 project is currently conducting research that examines the effects of increased levels of CO 2 . As the world's water resources are being pushed to the limit, solutions need to come quickly. The melting of the Arctic ice cap raises new questions about global warming. Genetically modified corn was found in taco shells, even though it was not approved for use in human foods. The elephants' changing habitats are making their survival more difficult.