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NASA's Apollo missions already sent astronauts to the moon from 1969 to 1972. But scientists say there's still lots of good science to do there. The moon also could be an ideal stepping stone to Mars.

Become a Master Composter! The five-week Master Composter course provides training in the art and science of composting. The course includes lectures, guest speakers, demonstrations, and a field trip. Minimize your carbon footprint. Keeping food and yard waste out of the landfill reduces harmful methane gas emissions. Use this "waste" to create amendments for your garden. Compost use reduces the need for synthetic fertilizers and pesticides. Reduce water use and increase water retention. Compost increases your soil's water-holding capacity and improves water retention. The Master Composter course provides training in the art and science of composting. The course includes lectures, demonstrations, and a field trip. The course covers the following topics: Traditional composting Compost bin building and troubleshooting (in teams!) Vermicomposting Bokashi Bugs in your compost pile Environmental impacts Much more! Master Composter certification requires attendance at all 5 classes, as well as 30 volunteer hours of related community service. Meet new people in this fun, hands-on course and develop your composting knowledge, all while serving your community! Class size is limited. This class will meet Saturdays from 9:00 a.m. - 12:00 p.m. : Week 1 - May 7 Week 2 - May 14 Week 3 - May 21 [No class on Memorial Day weekend] Week 4 - June 4 Week 5 - June 11 Residents of unincorporated San Diego County will receive preferential registration. All others will be placed on a waitlist and apprised of space available 1-2 weeks before the start of the course. SPECIAL OFFER! All participants will receive a free kitchen scrap container* after attending the first two classes. Class graduates will receive their choice of the following*: 1 Soil Saver traditional compost bin, or 1 Wriggly Wranch vermicompost bin. Hold your free spot: https://bit.ly/35qdoJo This course has been made possible through generous funding from the County of San Diego. In partnership with the Spring Valley Branch Library. *Limit 1 per household.

The two leaders met in Beijing and discussed the war in Ukraine, a week after China released a position paper, calling for a cease-fire and peace talks between Russia and Ukraine.

A planned spacewalk by two Russian cosmonauts has been called off after ground teams noticed a significant leak from one of the spacecraft docked at the orbiting International Space Station.

A veteran attendee shares some pointers for not just surviving Comic-Con but enjoying it.

New congressional districts map approved by the Citizens Redistricting Commission made a big change to San Diego County — a majority Latino district, one of 16 in California. Plus, Pfizer is considering increasing the doses for its children COVID-19 vaccine to three after a two-dose trial shows disappointing results. And, a closer look at renting in the San Diego area and the growing housing rights movement in the wake of the pandemic. Finally, a preview of Mystery Science Theater 3000’s Live Time Bubble Tour coming to the Balboa Theatre.

Prime Minister Justin Trudeau said the government's ban of TikTok on all government-issued mobile devices might be a first step to further action or that it might be it.

Much will be written about Abraham Verghese's latest novel in the coming months and years; it's a literary feat that deserves to be lauded as much as those of the likes of Dickens and Eliot.

The ancient disease is still a killer. And even though there are new drugs, there's a growing rate of antibiotic-resistance cases. Here's a look at the latest strategies to tame typhoid.

Instagram and Facebook are launching a new paid verification service, Meta Verified. Here's what it means — and how it compares to Twitter Blue.