0 Have your say April 22 marks the annual Earth Day, a day which marks the anniversary of the birth of the modern environmental movement, which began in 1970. This day brings to light the importance of being Eco-friendly and aims to bring the issue of plastic pollution to the attention of everyone around the world.As the day focuses on and celebrates the wonderful planet that is our home, the Earth in all its glory is brought to the forefront of people’s minds, but did you know all of these unusual, yet spectacular facts about planet Earth?1. All of the Earth’s rocks are recycled again and againThe ground that we walk on every day is recycled and will continue to keep being recycled, as the Earth's rock cycle transforms igneous rocks to sedimentary rocks to metamorphic rocks and this cycle continues again and again. Volcanoes spit the rocks out as magma, which then dry, harden and then after a very long time they either get sucked down again by plate tectonics or … [Read more...] about Did you know these 15 unusual facts about the Earth?
Core of the earth
According to the popular view of the Earth's formation, about one billion years ago, our planet's molten liquid inner core spontaneously began to crystallise, growing rapidly to the extent that it reaches today – around 760 miles in diameter. However, a new study published in the journal Earth and Planetary Science Letters contradicts this theory, suggesting it is impossible. Researchers from Case Western Reserve University in Ohio argue that the standard narrative is overlooking a key detail of how crystals form, namely, that they require a huge drop in temperature that is unlikely to have happened inside the core. In fact, once this is taken into account, the team suggest that the Earth's inner core shouldn't exist at all. "Everyone, ourselves included, seemed to be missing this big problem, that metals don't start crystallising instantly unless something is there that lowers the energy barrier a lot," said author Steven Hauck, a professor of Earth, Environmental and Planetary … [Read more...] about Formation of the Earth’s inner core is so baffling, scientists say it shouldn’t exist
WE MIGHT have uncovered the answers of a few mysteries this year, but if we’ve learned anything, it’s that we still know very little, about a lot.Despite our technological ability in this modern world there are many mysteries that continue to haunt us.How did Sherri Papini survive her kidnap?Why were these medieval bones buried in such a puzzling way? How did this NFL player defy gravity?These are the greatest unsolved mysteries of 2017.The curious case of Amelia Earhart’s disappearance during her attempt to fly around the world 80 years ago has long remained legend as researchers hunt for her remains to this day.This year, we may have gotten closer than ever before, in fact National Geographic said the mystery “of what happened to Amelia Earhart may be as close as it’s ever been to being solved”.The publication used four bone-sniffing dogs who each detected human remains in the same spot on a remote island in the Pacific, Nikumaroro, Kiribati, which … [Read more...] about Thousands of octopus marching out of the sea, a floating ‘haunted city’ and a secret Egyptian pyramid chamber – we examine the greatest unsolved mysteries of 2017
The core of Planet Earth is seriously hot, as hot springs, geysers and volcanoes attest to. High temperatures can be found nearly everywhere at about 5,000 meters below ground. This heat can be harnessed as a source of energy. The advantages of geothermal energy are numerous: the supply is more or less inexhaustible, it can be used for heat and electricity and it barely emits any greenhouse gases. Tapping this power from the Earth's depths is one of the greatest technical challenges of the 21st century. GLOBAL IDEAS reporters traveled across the globe to explore the various ways in which this challenge is being met. Geothermal energy in Europe The Icelandic capital Reykjavik boasts the largest district heating grid in the world. Seven power plants produce electricity from geothermal energy. Iceland draws more than two thirds of its energy supply from renewable sources, 50 percent of which is geothermal energy. This electricity is used for households, public swimming pools and … [Read more...] about Harnessing the Earth’s power – geothermal energy
The European Space Agency's (ESA) Swarm mission will soon launch three satellites into space. Built in Germany, the satellites will research the earth's magnetic field, which acts as an invisible shield that repels energized particles from the sun and deep space. The ESA's Swarm mission, with a launch date in mid-2012, is intended to observe the Earth's geomagnetic field by measuring processes in the molten core, as well as on the mantle and crust of the planet. Information delivered can be used to determine whether the poles are shifting, and help predict space weather. Space mission into the depths of Earth Albert Zaglauer, a project director with the company Astrium in Friedrichshafen, explained the importance of the geomagnetic field. "Without the Earth's magnetic field, we wouldn't exist, as we'd be fully exposed to cosmic radiation," Zaglauer told DW. The Earth's magnetic field comes from movement of molten lava in the planet's core. And as measurements over the last 150 … [Read more...] about Viewing the guts of the Earth from outer space