Chemical industry lobbyists have long pushed the government to adopt a less stringent approach to gauging the cancer risk ...

Marines with Marine Corps Recruit Depot (MCRD) San Diego participates in a chemical, biological, radiological, nuclear, and explosives (CBRNE) training exercise at MCRD San Diego, July 27, 2022. (Cpl.

Facing lawsuits and criticism from scientists, environmental groups, and the chemical industry, the US Environmental Protection Agency is overhauling its approach for evaluating risks associated with ...

Students will be able to make measurements showing that whether the process is a change of state, dissolving, or a chemical reaction, the total mass of the substances does not change. Note: In the ...

Baking a cake is a great way to do science without even knowing it. When you bake a cake, the ingredients go through a chemical change. A chemical change occurs when the molecules that compose two or ...

Physical and chemical changes occur all around you every day. Read the story below and circle the physical and chemical changes you see within it. Use your blue pen to circle physical changes and your ...

Put yourself in the exoskeleton of a bumble bee for a moment: Your world would be a riot of colors and scents, both essential to guide your search for pollen and nectar. Bumble bees have excellent ...

Star chemistry reveals two spiral arms and a faint bridge in the Milky Way, offering a clearer view of hidden structure in ...

Read Dr. Don Leopold's Guide to Fall Colors in Upstate New York with color images of dozens of trees and shrubs. Every autumn we revel in the beauty of the fall colors. The mixture of red, purple, ...