As Alaska's bleak winter sets in, arctic ground squirrels burrow deep into the ground to begin an eight-month-hibernation before popping up again in spring, famished and eager to breed.
Ecology
May 28, 2023
0
30
In people with Alzheimer's, the earliest symptoms are commonly disruptions in sleep rhythms. These include daytime sleepiness, showing agitation or confusion around dusk, staying awake longer, and waking up often at night. ...
Veterinary medicine
Apr 28, 2023
0
477
For the first time, scientists have recorded brain activity in a free-ranging, wild marine mammal, revealing the sleep habits of elephant seals during the months they spend at sea.
Plants & Animals
Apr 20, 2023
0
1025
Although the regulation of sleep—how much, when, and how sleep occurs—is mainly considered to be controlled by the brain, sleep deprivation also affects the body, and signals from the body can affect sleep. However, the ...
Cell & Microbiology
Mar 27, 2023
0
35
When it comes to oxygen, you can have too much of a good thing. Breathing air that contains higher levels of oxygen than the usual 21 percent found in Earth's atmosphere can cause organ damage, seizures, and even death in ...
Cell & Microbiology
Mar 9, 2023
0
139
Early class start times are associated with lower grades and poorer attendance, according to a study tracking attendance and grades of university students.
Yale scientists have for the first time identified a volatile pheromone emitted by the tsetse fly, a blood-sucking insect that spreads diseases in both humans and animals across much of sub-Saharan Africa. The discovery offers ...
Plants & Animals
Feb 16, 2023
1
28
College is a time of transition for young adults. It may be the first time students have the freedom to determine how to spend their time, but this freedom comes with competing interests from academics, social events and ...
Education
Feb 13, 2023
0
50
The higher the temperatures, the faster physiological processes are. But there is an exception: the so-called circadian clock, which regulates the sleep-wake cycle in organisms. A fascinating question for scientists is why ...
Cell & Microbiology
Dec 29, 2022
0
311
Depending on age, humans need 7 to 13 hours of sleep per 24 hours. During this time, a lot happens: Heart rate, breathing and metabolism ebb and flow; hormone levels adjust; the body relaxes. Not so much in the brain.
Molecular & Computational biology
Nov 18, 2022
0
55
