Science.gov searches authoritative science content from U.S. goverment databases and websites from 14 federal agencies.
Here are a few (by no means all) U.S government sites for science information related to some of your topics:
|Tip: To search across multiple government websites in Google, include site:.gov in the search, like this. It will limit the search results to US federal, state, and local government websites.|
State agencies include the California Environmental Protection Agency, the Department of Resources Recycling and Recovery (CalRecycle), and the California Energy Commission.