Reference Terms
from Wikipedia, the free encyclopedia
Caldera
A caldera is a volcanic feature formed by the collapse of a volcano into itself, making it a large, special form of volcanic crater.
Note: The above text is excerpted from the Wikipedia article "Caldera", which has been released under the GNU Free Documentation License.
Related Stories
1
2
Earth & Climate News
March 10, 2025
Mar. 10, 2025 — Scientists have discovered that whales move nutrients thousands of miles -- in their urine -- from as far as Alaska to Hawaii. These tons of nitrogen support the health of tropical ecosystems and fish, where nitrogen can be limited. They call this ...
Mar. 6, 2025 — A sweeping study for the first time tallies butterfly data from more than 76,000 surveys across the continental United States. The results: Butterflies -- all of them -- are ...
Mar. 6, 2025 — Researchers have discovered the world's oldest known meteorite impact crater, which could significantly redefine our understanding of the origins of life and how our planet was shaped. The team found evidence of a major meteorite impact 3.5 billion ...
Mar. 4, 2025 — Researchers explore the likelihood that Earth's climate, as affected by solar heat, plays a role in seismic activity. Using mathematical and computational methods, they analyzed earthquake data alongside solar activity records and surface ...
Latest Headlines
updated 12:56 pm ET
Mar. 10, 2025 — Without plants on land, humans could not live on Earth. From mosses to ferns to grasses to trees, plants are our food, fodder and timber. All this diversity emerged from an algal ancestor that ...
Mar. 10, 2025 — In a study comparing the glioma tumors of firefighters and non-fighters, researchers found a mutational signature tied to exposure to haloalkanes, ...
Mar. 10, 2025 — Aerospace engineers found that greenhouse gas emissions are changing the environment of near-Earth space in ways that, over time, will reduce the ...
Mar. 10, 2025 — It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in microorganisms capable of performing photosynthesis. ...
Mar. 3, 2025 — Antibiotic resistance is a global concern that threatens our ability to prevent and treat bacterial infections in humans and animals. To better ...
Mar. 7, 2025 — An international team of scientists has synchronized key climate records from the Atlantic and Pacific Oceans to unravel the sequence of events during the last million years before the extinction of ...
Mar. 6, 2025 — Researchers have found that reef fish from the Arabian Gulf, the world's hottest sea, exhibit a higher tolerance to temperature fluctuations compared to those from more thermally stable coral reefs. ...
Mar. 3, 2025 — London's Ultra Low Emission Zone (ULEZ) is transforming children's journeys to school by making streets safer, improving perceptions of air quality and encouraging children to live healthier lives. A ...
Mar. 7, 2025 — Soaking up pollutants like a sponge, porous organic polymers (POPs) may be the key to reducing greenhouse gas emissions, according to ...
Mar. 7, 2025 — A new analysis reveals that nearly half of the genus Heliconia, a group of tropical plants popular for their bright, beak-shaped flowers, are ...