Vertebrates are defined as all animals that possess a vertebral column, or backbone. Most living vertebrates also possess jaws, teeth and paired fins or limbs.
Paleontology & Fossils
Jan 31, 2024
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167
Roughly 8,200 years ago, the island of Yuzhniy Oleniy Ostrov in Lake Onega in the Republic of Karelia, Russia, housed a large burial ground where men, women and children of varying ages were buried. Many of the graves contain ...
Archaeology
Jan 14, 2021
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792
The Leidenfrost effect is a well-known physical phenomenon first discovered in 1756. It occurs when a liquid is in the proximity of a surface that is significantly warmer than its boiling point. This produces an insulating ...
In a new study published in Evolution, biologists laid to rest a century-old debate by confirming that a single species of frog, out of the more than 7,000 living today, has true teeth on its lower jaw. The culprit, a large ...
Evolution
Nov 10, 2021
0
203
When people take out student loans for themselves, certain risks are involved. The debt can negatively affect a person's mental, emotional and even physical well-being. It can also harm a person's financial well-being.
Economics & Business
Dec 20, 2021
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8
Splash a few drops of water on a hot pan and if the pan is hot enough, the water will sizzle and the droplets of water seem to roll and float, hovering above the surface.
General Physics
May 24, 2024
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72
Researchers working on molecular-level responses in crops have taken a step closer to their goal of producing heat-tolerant wheat.
Plants & Animals
May 4, 2020
3
688
Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the planet's deep carbon ...
Earth Sciences
May 15, 2015
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1281
Roughly one in four U.S. households have soil exceeding the new U.S. Environmental Protection Agency's lead screening levels of 200 parts per million (ppm), halved from the previous level of 400 ppm, a new study found. For ...
Earth Sciences
Jun 18, 2024
0
99
The water contained in California's mountain snow is now lower than the historical average after a January without significant rain or snow—a dramatic reversal from December that demonstrates the state's challenges in managing ...
Environment
Feb 2, 2022
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10
