Something noone can explain!

It is pretty normal when something goes wrong and we have a disaster as a result, thus it is still strange when we have a disaster and no ideas how to explain this. There were several similar situations in Earth history; I want to tell you about the brightest one.
30 June, 1908. Thousands of square km of trees were burned and flattened.
Scientists have always suspected that an incoming comet or asteroid lay behind the event - but no impact crater was ever discovered and no expedition to the area has ever found any large fragments of an extraterrestrial object.

The explosion, equivalent to 10-15 million tones of TNT, occurred over the Siberian forest, near a place known as Tunguska.

An atmospheric shock wave circled the Earth twice. And, for two days afterwards, there was so much fine dust in the atmosphere that newspapers could be read at night by scattered light in the streets of London, 10,000 km (6,213 miles) away.

So what was that?!

Aren't they beautiful?

No comments. Just look at this!

Natural designers.

First fabric was invented when people saw how do they make it! To my ind they are the best ever designers. Spiderwnet is the most complicated and beautiful struture in nature. Some of the spiders decorate their nets with the patterns.
Here are some photos of this beauty.
I just want to tell you: Save the nature!

Greenpeace ads

I like how these people work. Their ads are always conceptive and wise. I just want to share with you some of them, the best ones to my mind.

Pollution

Clouds of choking smog; beaches coated in oil; rivers turned red by chemicals. All of these are obvious examples of pollution.

However, not all types of pollution are easily seen. For example, invisible plumes of gas may drift over our towns and cities. They can cause asthma and chest problems. They can also kill trees.

Another problem is finding out the size of the area affected. Winds can blow pollutants across thousands of kilometres, from one side of an ocean to the other. Chemicals flowing down large rivers can pollute many countries on their way to the sea.

Then there is the problem of finding out who is to blame.

Satellites are key weapons in this never-ending fight to keep the planet clean. Space-based instruments can detect harmful gases and chemical waste released by industry, power plants and traffic.

Satellites can pinpoint the sources of pollution, watch it move through the air and see where it ends up. They can also study ocean colour and detect oil spills at sea, both day and night.

From hundreds of kilometres above the Earth, these “spies in the sky” help to identify major exporters and importers of pollution across the world.