Dan Heim hosts a weekly blog (advertisement free!) that should be helpful to homeschoolers at junior high level and above. Topics addressed are generally from astronomy, meteorology, and earth science, often determined by current events. Search "Browse All Posts" for brief interesting coverage of many topics, often with links to vetted sites.
Note: Publishers, authors, and service providers never pay to be reviewed. They do provide free review copies or online access to programs for review purposes.
Disclosure of Material Connection: Some of the links in the post above are "affiliate links." This means if you click on the link and purchase the item, I will receive an affiliate commission. Regardless, I only recommend products or services that I believe will add value to my readers. I am disclosing this in accordance with the Federal Trade Commission's 16 CFR, Part 255 "Guidelines Concerning the Use of Endorsements and Testimonials in Advertising."