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A powerful solar storm struck Earth, triggering spectacular celestial light shows in skies around the world — and threatening possible disruptions to satellites and power grids.

This is the fourth test for Starship, and this time, it returned successfully to earth.

Check out what panels are must-see according to our resident Comic-Con geek.

When an NPR reporter heard a startling loud metallic noise in her house, she was about to get an interesting lesson in animal behavior.

Neuroscientists said humans are hardwired to understand the feelings and needs of others. The Sanford Institute for Empathy and Compassion studies those neural networks and teaches medical professionals to make the most of them.

Forget names like "Dumbo"—wild elephants appear to have their own unique names that other elephants use while talking to them in low rumbles.

The Sanford Stem Cell Institute Symposium is a free two-day event highlighting advancements in the realm of regenerative medicine and its potential to revolutionize stem cell based therapies. This program includes interactive discussion panels on stem cells in space, clinical trials, and publishings as well as a networking cocktail hour both days. Join us in welcoming our four Keynote speakers: astronaut, former ISS Commander, and biochemistry researcher Peggy Whitson, molecular geneticist and “Father of organoids” Hans Clever, National Academy of Science member and Harvard Med’s Professor of Pediatric Medicine Leonard Zon, and Harvard scientist working on breakthrough research with tissue regeneration Amy Wagers. For more information visit: stemcellprogram.ucsd.edu

Forecasters say the warming climate pattern El Niño is officially over. Its cooling counterpart, La Niña, could develop as soon as July — just in time to exacerbate an above-average hurricane season.

Tell NPR where you plan to watch the total solar eclipse on April 8.

Become a Master Composter! Join us at the beautiful Deer Park Monastery, tucked away in the hills of Escondido, to gain composting knowledge you can pass along to others. • Minimize your carbon footprint. Keeping food and yard waste out of the landfill reduces harmful methane gas emissions. • Use food and yard “waste” to create amendments for your soil. Compost use reduces the need for synthetic fertilizers and pesticides. • Reduce water use and increase water retention at your garden, ranch, or farm. 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 through lectures, demonstrations, and a field trip. The course covers the following topics: • Traditional composting & vermicomposting • Compost bin building and troubleshooting (in teams!) • Microbiology of composting • Bokashi fermentation • Macrodecomposers in your compost pile • A tour of Deer Park Monastery’s composting system • Environmental impacts 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. Residents of unincorporated County of San Diego 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. Before registering, please enter your address here to check your residency. You can select the County of San Diego Residents ticket option ONLY if your jurisdiction boundary result is “S.D. COUNTY.” All others must select the waitlist option. If this course fee presents a financial hardship, it may be waived upon request. Please contact Erin Stone at erin@solanacenter.org before registering to inquire. This course has been made possible through generous funding from the County of San Diego and County of San Diego Recycling. Thanks to our site host, Deer Park Monastery. Saturdays, February 24 through March 23 from 9:30 a.m. - 12:30 p.m.