Spotting wildlife in these dark and dense forests teeming with insects and spiny palms is always challenging. This is because of the very nature of biodiversity in Amazonia, where there is a small number of abundant species and a greater number of rare species which are difficult to survey adequately.
Understanding what species are present and how they relate to their environment is of fundamental importance for ecology and conservation, providing us with essential information on the impacts of human-made disturbances such as climate change, logging, or wood-burning. In turn, this can also enable us to pick up on sustainable human activities such as selective logging – the practice of removing one or two trees and leaving the rest intact.
The U.S. announced on Friday a new $820 million Ukraine military aid that includes the National Advanced Surface-to-Air Missile System (NASAMS). The Pentagon contract denotes the start of a contracting process for a significant amount of equipment, including four more counter-artillery radars and up to 150,000 rounds of 155mm artillery ammunition, through the Ukraine Security Assistance Initiative.
NASAMS can be quite an unpleasant adversary for tactical aircraft (possibly with the exception of the Su-57), helicopters, drones, subsonic cruise missiles (Caliber, Kh-101, 9M728). Against high-speed targets (from Oniks to Kinzhal) the benefit of this system seems doubtful.
Spoiler alert: this article explains a key plot point, but we don’t give away anything you won’t see in trailers. Thanks to reader Florence, 7, for her questions.
At the beginning of the new Disney Pixar film, Lightyear, Buzz Lightyear gets stranded on a dangerous faraway planet with his commanding officer and crew.
Finding the Higgs boson is the compelling story behind Elusive: How Peter Higgs solved the mystery of mass. But Frank Close’s book lives up to its title as both the man and his particle ultimately slip through the net.
Deep Longevity has published a paper in Aging-US outlining a machine learning approach to human psychology in collaboration with Nancy Etcoff, Ph.D., Harvard Medical School, an authority on happiness and beauty.
The authors created two digital models of human psychology based on data from the Midlife in the United States study.