Elephants are an example of organisms that have few, but large, offspring. Elephants also put more energy into rearing their offspring than many animals, such as fish, which lay their eggs and leave them behind.
Dec. 11, 2019
A new theory describes what all animals have in common and allows predictions for specific traits of species that might not be well understood by science.
This view of asteroid Bennu ejecting particles from its surface on January 6 was created by combining two images taken by the NavCam 1 imager onboard NASA’s OSIRIS-REx spacecraft: a short exposure image (1.4 ms), which shows the asteroid clearly, and a long exposure image (5 sec), which shows the particles clearly. (Photo: NASA/Goddard/University of Arizona/Lockheed Martin)
Dec. 5, 2019
NASA's OSIRIS-REx science team has identified three possible explanations for the particles that asteroid Bennu is consistently tossing into space.
The lowland Amazon rainforest canopy as seen by the Global Airborne Observatory. Different colors represent different spectral fingerprints. (Image: ASU Global Airborne Observatory)
Dec. 3, 2019
New University of Arizona-led science is using air-based maps of plant chemistry to improve carbon cycling models in hyperdiverse tropical forests.
Dec. 2, 2019
Researchers monitored students' heart rates during medical school lectures to test the long-standing theory that active learning provides an attention reset.
When the particular enzymes that Nancy Horton investigated for this study link up, they spiral around a length of DNA and shred it 200 times faster than when the enzymes are solitary. (Photo: Pixabay)
Nov. 26, 2019
A University of Arizona researcher describes how a cellular structure that was once lost to science combats attacks waged in the “world’s oldest war.” Her research is part of a larger renaissance in the field thanks to new techniques.
With exceptionally keen vision and the fastest strike in the animal kingdom, mantis shrimp are formidable predators of coral reefs around the world. (Photo: Roy L. Caldwell/University of California, Berkeley)
Nov. 25, 2019
A new study provides insight into how the small brains of mantis shrimp – fierce predators with keen vision that are among the fastest strikers in the animal kingdom – are able to make sense of a breathtaking amount of visual input.
Deforestation puts very rare plant species at risk.
Nov. 22, 2019
New University of Arizona-led research found that out of about 435,000 land plants on Earth, 36.5% are exceedingly rare and are clustered in hot spots.
Nov. 18, 2019
The University of Arizona ranks in the top 4% of all U.S. universities in research and development expenditures, according to data from the National Science Foundation.
Researchers hope to improve traffic efficiency and safety on Speedway Boulevard, which runs from east to west through Tucson and the University of Arizona campus. (Photo: Jim Robison/City of Tucson)
Nov. 18, 2019
One civil and architectural engineering and mechanics professor aims to optimize traffic signal timing and improve the commute on Speedway Boulevard.