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1. SpaceX Launches Space Station-Bound Cargo From Florida https://www.space.com/spacex-dragon-space-station-cargo-launch-success.html 2. International Space Station to Make Rare Triple Flyby of the Moon https://www.space.com/international-space-station-triple-moon-flyby-april-2020.html 3. Astronauts Complete First All-Women Spacewalk in History https://www.space.com/first-all-women-spacewalk-international-space-station.html 4. Space Station Astronauts Take a Spacewalk to Install New Batteries https://www.space.com/space-station-crew-spacewalk-battery-installation.html 5. Video: Astronauts to Celebrate 20 Years of Continuous Human Presence on the Space Station https://www.space.com/international-space-station-20th-anniversary-video.html
The following problem appeared in Volume 53, Issue 4 (2022) of The College Mathematics Journal. This was the first problem that was I able to solve in over 30 years of subscribing to MAA journals. Suppose that $latex X$ and $latex Y$ are independent, uniform random variables over $latex [0,1]$. Now define the random variable…
Legumes host symbiotic nitrogen-fixing rhizobia within root nodules. To deliver rhizobia to nodules, the plant transiently creates cytoplasmic bridges to allow rhizobia entry and progression. Here we dissected the underlying extensive ultrastructural reprogramming and fine-tuned calcium regulation.