Transmission mostly occurs through large respiratory droplets. The virus can also enter the body through bodily fluids, lesion material or indirect contact with lesion material.
Full StoryEarth's radiant infrared heat can be used to generate electricity even after the sun has set.
Full StoryA recent study provides a proof of principle for the development of multivalent vaccines against pandemic and potential pre-emergent SARS-CoV-2 variants.
Tidal wetlands are of immense importance to humanity, providing benefits such as carbon storage and sequestration, coastal protection, and fisheries enhancement.
The findings contribute to a growing body of telltale signs that suggests liquid water activities may have persisted much longer on Mars than previously thought.
While the scale of coral mortality is not yet known, recurrent bleaching events profoundly change the composition of coral communities on the reef.
Major threats facing migratory birds include habitat destruction and fragmentation, light pollution, hunting for sport, erratic weather patterns, and trapping by power transmission lines.
Discovered in 1967, pulsars are remnants of massive stars that emit flickering beams of electromagnetic radiation, which can be useful for guiding spacecraft.
Climate change and warming temperatures are causing sea levels to rise, on average, by 3.5 millimeters per year.