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The year summer was erased
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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 ...
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4372 |
bio_man |
7 years ago |
World's deadliest tree
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The manchineel tree ( Hippomane mancinella) has taken the title of world’s most dangerous tree. This evergreen grows up to 15 metres (49 ft) tall, and is native to tropical southern North America and northern South America. It has reddish-greyish bark, small greenish-yellow flowers, and shiny green leaves ranging in size from 5 to 10 cm (2–4 inches) long. All parts of the tree contain strong toxins, some unidentified. The leaves and fruit of the tree superficially resemble an apple tree, however one bite of the tree’s fruit can cause abdominal pain, vomiting, bleeding, or death due to an acetylcholine inhibitor known as physostigmine found in the fruit. In addition, its milky white sap contains phorbol and other skin irritants, producing s ...
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4417 |
duddy |
8 years ago |
All trees, regardless of size, break once this wind speed is reached
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The magic number is 42 m/s (94 mph). Using mathematical data and physical experiments, scientists say they have found the law that governs the resistance of wooden beams under stress. According to the study ( link), researchers hung weights from wooden rods and pieces of pencil lead to record the amount of force needed to snap the cylinder. As one might sense, they found that for a fixed length, increasing the diameter made the rods stronger: They could bend more before breaking. This would make tall skinny trees most vulnerable, but, as the team points out, trees don’t grow taller without getting disproportionately thicker as well. By incorporating established laws of tree allometry - which explain the relationship of tree size parameters ...
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12925 |
duddy |
9 years ago |
The earth contains more than 3 trillion trees
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A new international study estimates that there are more than 3 trillion trees on Earth, about seven and a half times more than some previous estimates. This number was formulated by collecting tree density information from more than 400,000 forest plots around the world. But the total number of trees has plummeted by roughly 46 percent since the start of human civilization. The results provide the most comprehensive assessment of tree populations ever produced and offer new insights into a class of organism that helps shape most terrestrial biomes. Source: http://www.nature.com/nature/journal/vaop/ncurrent/full/nature14967.html ...
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32675 |
duddy |
9 years ago |
Instant treehouse
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This is a portable staircase you can strap onto any tree!
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4621 |
duddy |
9 years ago |
This Chinese ghost town became one with nature
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An old fishing village on the island of Shengshan on the Yangtze River was abandoned for economic reasons, only to become one with nature. The island, a few hours east of Hangzhou Bay, is a stark contrast to the vibrant metropolitan skyline of nearby Shanghai - an image conjured up in many westerners' minds when imagining populous China. Some of the islands at the mouth of the Yangtze river are popular tourist destinations and have been described as a paradise for seafood lover, while others are inhabitable. The stunning scenery on Shengshan Island is the result of the houses and outbuildings being slowly consumed by nature. The seaside village now lies empty because it was more economical for the fishermen to move and work on the mainland ...
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2782 |
duddy |
9 years ago |
Pine cones the size of melons!
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The Australian Bunya pine drops pine cones that are the size of melons. The cones are 20–35 cm in diameter, and are opened by large birds, such as cockatoos, or disintegrate when mature to release the large (3–4 cm) seeds or nuts.
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27995 |
duddy |
10 years ago |
Overcrowded forest leads to this
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This beautiful mosaic of leaves is caused by a mysterious natural phenomenon known as 'crown shyness'. Seen here in a cluster of Kapur trees in Malaysia, scientists suspect that it occurs when young shoots become sensitive to touch, and stop growing once they graze other leaves.
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4106 |
duddy |
10 years ago |
What grows faster than bamboo?
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Some species of bamboo can grow as fast as 3 feet a day. Also those type of bamboo were used to kill. By staking victim over sharpen bamboo tops as the bamboo grew. It went slowly through the victim.
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1730 |
duddy |
10 years ago |
This sweet fruit grows in the most unbelievable place
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The Brazilian Jaboticaba tree well and truly takes advantage of all the surface area on its trunk by growing its sweet, grape-like fruits all over it. It's said to have evolved its trunk-fruit so animals could reach them and distribute the seeds.
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4258 |
duddy |
10 years ago |
A 'multi-berry' tree
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Meet Italy’s double tree, the Bialbero de Casorzo. That cherry tree on top isn't being parasitic - its roots have grown right through the hollow truck of the mulberry tree into the earth below, so there's no stealing of nutrients going on here.
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6808 |
duddy |
10 years ago |
Bloody trees
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The dragon’s blood tree ( Dracaena draco) has a thick red resin that makes the plant appear to be bleeding when it is cut. These subtropical plants form huge umbrella-like canopies and can grow for hundreds of years, but they are currently listed as Vulnerable by the IUCN due to the trademark resin being used in traditional medicine, violin staining, and even for embalming the dead.
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5658 |
duddy |
11 years ago |
What's the world's most delicious fruit?
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Ever wondered why two of the world's most delicious fruits - the mango and the avocado - have such enormous seeds? Turns out they likely evolved to be swallowed whole by megafauna, like our modern-day rhinos and elephants, that once ruled the Earth, to be deposited far away from their host plant and wrapped in a fresh dollop of fertiliser. That's why these seeds are nicknamed 'ghosts of evolution'.
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6768 |
duddy |
11 years ago |
Here's how to preserve the Amazon rainforest
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In 2005 Swedish millionaire Johan Eliasch purchased a 400,000-acre (1,600 km 2) area of land in the heart of the Amazon rainforest from a logging company for the sole purpose of it’s preservation. Johan Eliasch, born in Sweden, is the Chairman and CEO of Head N.V. the global sporting goods group, and is the former Special Representative of the Prime Minister of the United Kingdom. In 2005, Johan Eliasch created the Rainforest Trust and purchased for preservation purposes a 400,000-acre (1,600 km2) rainforest area in the heart of the Amazon rainforest near the Madeira River. Johan Eliasch co-founded Cool Earth in 2006, a charity he co-chairs, which sponsors local NGO's to conserve endangered rainforest and has over 120,000 registered members. ...
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4684 |
duddy |
11 years ago |
Plants can be albino too!
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This is an albino redwood tree, with white needles instead of green because it's unable to produce chlorophyll. In order to survive, albino redwoods must join their roots to those of a normal redwood to obtain nutrients. Found in Henry Cowell Redwoods State Park and Humboldt Redwoods State Park in the US, there are only around 20 known albino redwoods in the world, and their exact whereabouts have been kept secret as protection.
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5876 |
duddy |
11 years ago |