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Posted by bio_man   May 24, 2017   136 views

The eruption of Mount Tambora was so massive, it erased summer that year.

The 1815 eruption of Mount Tambora was one of the most powerful eruptions in recorded history. The eruption of the volcano, on the island of Sumbawa in the Dutch East Indies (present-day Indonesia), reached a climax on 10 April 1815 and was followed by between six months and three years of increased steaming and small phreatic eruptions.

The ash from the eruption column dispersed around the world and lowered global temperatures, leading to worldwide harvest failures in an event sometimes known as the Year Without a Summer in 1816. The eruption resulted in a brief period of significant climate change that led to various cases of extreme weather. Several climate forcings [ ... ]
volcano Asia Indonesia trees disease eruption summer seasons
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Posted by bio_man   May 24, 2017   137 views

The tough-yet-fragile physical properties of the tadpole-shaped pieces of glass known as Prince Rupert’s drops have puzzled physicists for as long as, well, there have been physicists. Bash the head with a hammer, and a drop gets barely a scratch. But break off its thin tail, and it shatters into fine powder.

Researchers long ago realized that the strength of the drops - named for Prince Rupert of Bavaria, who presented five of them to Britain’s King Charles II in 1660 - has something to do with stresses in the glass created when a drop is made by letting a blob of molten glass fall into water, so that it cools rapidly.

Twenty years ago, a pair of researchers took high-speed video of a drop disintegrating showing that, when the tail is brok [ ... ]
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Posted by bio_man   April 19, 2017   3502 views

Digging 3 meters down into the dark marine mud of a former log storage pond in Mindanao, Philippines, scientists have discovered five live specimens of an elusive creature previously known only through the 1 to 1.5–meter-long calcium carbonate shells it left behind.

By carefully chipping away at the end of a chalky tube (right, above), researchers found a long, black, wormlike mass oozing from its casing – the first live specimen of the giant shipworm Kuphus polythalamia. The animal’s length makes it the longest of any living bivalve, a class of typically small critters including clams, oysters, and scallops. And as far as shipworms go, which usually burrow into and feed on wood from ships or sunken trees, K. polythalamia is unique for squa [ ... ]
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Posted by bio_man   March 29, 2017   5148 views

Chironex fleckeri, commonly known as sea wasp, is a species of deadly venomous box jellyfish found in coastal waters from northern Australia to the Philippines. It has been described as the most lethal jellyfish in the world, with at least 63 known deaths in Australia from 1884 to 1996.

Notorious for its sting, C. fleckeri has tentacles up to 3 m (9.8 ft) long covered with millions of cnidocytes which, on contact, release microscopic darts delivering an extremely powerful venom. Being stung commonly results in excruciating pain, and if the sting area is significant, an untreated victim may die in two to five minutes! The amount of venom in one animal is said to be enough to kill 60 adult humans (although most stings are mild). [ ... ]
sea wasp venom pain Australia
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1
That's why I won't swim in the ocean.
Posted on Mar 29, 2017 by ppk
2
It's amazing how they are so beautiful yet so dangerous
Posted on Apr 3, 2017 by cloveb
3
In both cases the great prize champ and world-record holder is the animal known as the ocean wasp, or marine stinger. The venom from a solitary animal can execute up to 60 grown-ups! More than 100 individuals have been murdered by the stings from a C [ ... ]
Posted on May 12, 2017 by jessicasbac
Posted by bio_man   March 1, 2017   7277 views

Plants are essential for any ecosystem, being both a food source and habitat for living things. Although plants are stationary, many are dangerous to touch or eat, making you sick or cause a bad reaction. Some of the most poisonous plants are described below:

Abrus Precarious or Rosary Pea (Left)

This plant has beans that contain a deadly poison. Ironically, their seeds are often used in jewelry and rosary making, but are not harmful when touched, only if chewed or scratched. The poison is known to stop protein synthesis, leading to organ failure.

Ricinus Communis or the Castor Bean (Center)

The castor bean plant comes from Africa and its seed is the source of castor oil used all over the world. However, the seeds contain a deadly poison called [ ... ]
plants botany poison toxin flowers
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