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50 years time?

Our earth is a delicate planet, one of a kind that supports life. However in 50 years time is it all going to be the same? Its scary thinking about mass extinction but why is it now why wasn't it earlier why in our generation? well the answer is that we are burning fossil  fuels to quick. Also we are putting so much carbon dioxide in the atmosphere That our planet is going threw serious changes that we are not doing much about. scientist recon we have about 30 to 40 years of fossil fuels left till we have a serious problem what will we do when it runs out?

What will earth look like in 50 years no one knows but people have theories.The earth is very delicate and we are destroying it.

ESA gives go ahead for satalite that can measure forests weight

The spacecraft will carry a novel radar system that is able to sense the trunks and big branches of trees from orbit.

Scientists will use Biomass to calculate the amount of carbon stored in the world's forests, and to monitor for any changes over the course of the five-year mission.

The satellite's data should help researchers understand better the role trees play in the cycling of carbon on Earth and, by extension, the influence this has on the planet's climate.

"Biomass will give us unprecedented knowledge on the state of the world's forests and how they are changing," said Prof Shaun Quegan, who was one of the key proposers of the mission. 

Biomass will be a 1.2-tonne satellite at launch, meaning it will probably go up on Esa's new Vega rocket, which successfully conducted only its second flight overnight.

Its sole instrument will send down a 70cm radar pulse that will penetrate the leafy canopies of forests but scatter back off the large woody parts of trees. It will sense the volume of material at a resolution of about 200m. In essence, it will be able to weigh the amount of carbon tied up in the world's forests.

Arctic Ocean is rapidly acidifying

Scientists from Norway's Center for International Climate and Environmental Research monitored widespread changes in ocean chemistry in the region.

They say even if CO2 emissions stopped now, it would take tens of thousands of years for Arctic Ocean chemistry to revert to pre-industrial levels.  They forecast major changes in the marine ecosystem, but say there is huge uncertainty over what those changes will be.

It is well known that CO2 warms the planet, but less well-known that it also makes the alkaline seas more acidic when it is absorbed from the air. Absorption is particularly fast in cold water so the Arctic is especially susceptible, and the recent decreases in summer sea ice have exposed more sea surface to atmospheric CO2. 

The researchers say there is likely to be major change to the Arctic marine ecosystem as a result. Some key prey species like sea butterflies may be harmed. Other species may thrive. Adult fish look likely to be fairly resilient but the development of fish eggs might be harmed. It is too soon to tell.

New dinosaur found in China

A new dinosaur found in China may be the oldest of its kind and a crucial link between lizard-like dinosaurs and the feathered, late-period creatures that bore a closer resemblance to today's birds.

A team of international researchers led by James Clark, from the George Washington University, found a fossilized leg bone on the side of a stream in a remote part of Xinjiang province in the far northwestern corner of China. That's not much, but, amazingly, they found more of the small dinosaur's body a partial skeleton, a nearly complete skull, and a mandible. It is a new species, a basal member of the Coelurosauria family tree. Coelurosaurs are late-period dinosaurs that resembled birds as much as the typical dinosaurs we think of; it's possible all of them were feathered.

The researchers gave the dinosaur a name: Aorun zhaoi, after the Dragon King in the Chinese epic tale Journey to the West. It is the oldest known coelurosaur--though it died a youngster.

This particular animal had many very small, sharp teeth, which are very useful clues as to what this dinosaur ate and how it behaved. The researchers suspect it preyed on lizards and primitive shrew-like mammals--though since this one is estimated to be less than a year old, we don't really know much about how the adult of the species lived, or even how big it might have been.

Trees can make noises when short on water

Like a person gasping for air when it's in short supply, living trees make noises when they are running out of water, and a team of French scientists is a step closer to pinpointing the noises.

Lab experiments at Grenoble University in France have isolated ultrasonic pops, which are 100 times faster than what a human can hear, in slivers of dead pine wood bathed in a hydrogel to simulate the conditions of a living tree.

Researchers exposed the gel to an artificially dry environment and listened for the noises that occurred as air bubbles built up, similar to what occurs to trees during droughts. Air bubbles form when a tree is trying to suck moisture out of dry ground during droughts. As leaves on a tree collect carbon dioxide, they open their pores, a process that leaves them vulnerable to water loss.

Evaporation from the leaves pulls water up the trees in a state of tension. The tree vacuums up water from the ground through its root system, pulling it up through tubes. There are thousands of them in a typical tree, connected by pit membranes (sort of like a two-way valve). Tension in the xylem tubes increases in times of drought, then cavitates.Douglas firs and pine trees can repair this damage as frequently as every hour, said Katherine McCulloh, a plant ecophysiologist at Oregon State University, in a past Our Amazing Planet interview. The bubbles are deadly for other species, however, if the bubbles block the water's flow

In the video you are accelerating through the observable universe. This simulation took many years to program and create. The simulation incorporates the stars and the effect of gravity on each other.