I ran across this site and it seems pretty good. It would be a good resource for your projects. It is called Astronomy for Kids but it seems to have good information.
The site ABOUT:Astronomy is a pretty through look at the topics that we would cover this semester. Make sure you look for the toolbars at the left of the page.
The ABOUT site has many diffent different topics not just about science. There is one for the environment, geography, and geology. Those links are here: ABOUT: Geology ABOUT: Geography and ABOUT: Environment
This site here is not quite as all-inclusive as some of the ones above, but it is written specifically for HS students and younger so it might be a place to go to first to see if they have the topic you need help on. It is www.cosmos4kids.com
For the current event assignment, here are some links to assist you in your research about SPACE EXPLORATION.