Extreme Science 
With a slogan like “Feed your Brain”, who can resist this site? Not me, that’s for certain.
Check out the Time Portal, Weather, Space, Creature World, Earth Science, and their Free Stuff section. Better yet, there is a Young Scientist gallery section for those rambunctious kids you have running around all summer.
Streamlined and extremely well put together, this site is charming and full of education and interesting information. Find tons on interesting facts, for example: Angel Falls in Venezuela is the highest waterfall in the world. And don’t forget to check out the “Gallery of Extreme Scientists”.