U.S. Fish and Wildlife Service
The week of February 18–24 saw historic moments in space science, plus hope for endangered species and the climate here on Earth.
Coronavirus vaccinations began in the Gaza Strip after a rival of Palestine's president organized delivery of the Russian vaccine.
Astronomers published a map of 25,000 supermassive black holes, covering 4 percent of the northern sky.
Researchers using a Cherenkov radiation detector in Siberia determined that nearly all high-energy neutrinos are produced in quasars, contrary to previous research.
A 10,150-year-old dog bone fragment was discovered in Alaska, supporting claims that dogs migrated with the first humans to the Americas.
Scientists proposed the existence of a particle heavier than the Higgs boson, which could reveal the origin of dark matter.
The U.S. finished the 30-day process to re-enter the Paris Agreement and committed to taking action against climate change.
Scientists revealed the black-footed ferret Elizabeth Ann, the first successful clone of a native endangered species in the U.S.
NASA's Perseverance rover touched down in the Jezero Crater on Mars, beginning its mission to find signs of ancient life on the planet.