Grants.gov has information about all federally supported funding opportunities and general information about the federal grant process.
Search for funded projects across federal agencies, including NSF, DOD, FDA, HHS, EPA, NIH, and more. This database is not comprehensive but offers a good starting point.
The National Institutes of Health are major funders of basic science research. Begin here to see the mission of the NIH, find links to its institutes, and learn about current NIH news.
The National Science Foundation is another major funder of basic science research and education initiatives for basic scientists.