Read biographies about the different astronauts at NASA.
Chemists study substances at the atomic and molecular levels and the ways in which the substances interact with one another.
Conservation scientists and foresters manage the overall land quality of forests, parks, and other natural resources.
Environmental scientists find and fix pollution and other environmental problems by figuring out what is in the air, water, and soil to make sure that our environment is safe.
Fire archeologists provides information on vulnerable plant or animal species, or cultural resources--before, during and after wildland fire incidents.
Oceanographers study a wide range of topics, including marine life and ecosystems and the chemical and physical properties of the ocean.
Physicist / Astronomer
Physicists study the natural world, from what things are made of (matter) to how things behave.
Plant Specialist (Botanist)
Botanist (Plant Specialist) Martin talks about Yosemite National Park's invasive plant program; he discusses invasive plants and their impact on the park.