Showing posts with the label natural disasters

Sharks Take Refuge In Deep Waters To Survive The Natural Calamities And Their Aftermath

Existing on earth for more than 400 million years, sharks have learned how to survive natural disasters and mass extinction events by diving deep into oceans and predicting storms. Along with volcanic eruptions, tornadoes and hurricanes, they have also survived the Big Five - the series of mass destruction events that destroyed swathes of plants and animals over millions of years. Image Credits: Pixabay The most disastrous of them was the Permian-Triassic extinction also known as the Great Dying, which occurred 252 million years ago. This mass extinction event destroyed 90 percent of marine life, 70 percent of land wildlife from which the Earth took 10 million years to recover. However, sharks survived. Finding Evidence For Shark Life In Deep Water According to the research published in 2013, during the Cretaceous period (a geological period that lasted about 145 to 66 million years ago), palaeontologists (people who study fossils) found fossilised teeth of the tiny Cladodontomorph s

'Building in a bag' - the ingenuity of concrete canvas

Image from Imagine a future where a piece of cloth that you lay down and  spray some water on turns into a slab of  concrete ! This is the magic of 'concrete canvas' and it is about to change some basic rules of civil engineering . Concrete canvas is a great innovation from engineering students Will Crawford and Peter Brewin, that feels like a normal canvas but put some water on it and it hardens in a few hours to give you a robust construction .  The cloth, impregnated with concrete,  is easy to transport and just needs water and some air to complete a construction. It doesn’t need heavy equipment , good working surfaces and is not labour intensive at all. You will need lots of water, which need can be sourced from a bore well or even the sea, an air blower (if the construction is big and you are in a hurry)  and some labour to put the cloth in desired places. You can roll the sheets on to slopes and it will take up the contour of the land, makin

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