Climate crisis: CO2 levels rise to highest point since evolution of humans Levels of the damaging greenhouse gas carbon dioxide have reached an alarming new milestone at the world’s oldest measuring station in Hawaii. The Mauna Loa Observatory, which has measured the parts per million (ppm) of CO2 in the atmosphere since 1958, took a reading of 415.26ppm in the air on 11 May – thought to be the highest concentration since humans evolved. The Scripps Institution of Oceanography measures CO2 levels at Mauna Loa daily. The observatory, on Hawaii’s largest volcano, was built to test air quality on the remote Pacific islands because it is far from continents and pollution, while the area lacks vegetation, which can interfere with results. We’ll tell you what’s true.
Governments are deciding whether to create an Antarctic Ocean Sanctuary. What you need to know What’s at stake: the largest protected area on Earth Over two weeks in late October, governments will meet in Hobart, Australia, to decide whether to create a vast Antarctic Ocean Sanctuary, covering almost two million square kilometres. If it goes ahead, it’ll be the largest protected area on the planet. The proposed sanctuary is centred on a part of the Antarctic Ocean called the Weddell Sea, which is home to whales, penguins, seals and countless other creatures, some of which we barely understand. *****Building a Dugout Canoe By Hand Might Be the Coolest Thing Ever - adventure journal C’mon, now, admit it—who doesn’t wish for the bushcraft skills to carve a dugout canoe with just a few hand tools? Yeah, well, you might want to rewind to childhood and get adopted by a Latvian woodworker father. Rihards Vidzickis’s passion for wood was sparked when young, and he’s devoted his life to the creation of practical and fine arts using green and dead wood.
Surface Conditions: Polar Portal Day-to-day development of the Greenland Ice Sheet with the weather The Greenland Ice Sheet evolves throughout the year as weather conditions change. Precipitation increases the mass of the ice sheet, whilst greater warmth leads to melting, which causes it to lose mass. The term surface mass balance is used to describe the isolated gain and loss of mass of the surface of the ice sheet – excluding the mass that is lost when glaciers calve off icebergs and melt as they come into contact with warm seawater.
First images of creatures from Antarctic depths revealed The images below are the first of creatures found in a previously unexplored region of the Antarctic seabed offering a fascinating glimpse of life in one of the most remote and pristine places on the planet. The rare species were found by Dr Susanne Lockhart, an Antarctic biologist who visited the seafloor in a submarine last month as part of a scientific expedition organised by campaigning organisation Greenpeace. Now they are being transported back to the laboratory where they – and hours of footage taken from the submarine – will be examined to reveal the secrets of this unexplored underwater world.
'Around the world in 80 days' seen from space Traveling is much more than just checking off a list of new places to see. It is about discovering unknown venues, various cultures and different points of view. Jules Verne, with his publication of “Around the World in 80 Days”, disclosed to the restless minds of its readers the passionate world of travel, showing exotic places for the inexperienced eyes. Since then, the way we travel has dramatically changed. Just to give an example, when the character Phileas Fogg wagered he could circumnavigate the world in 80 days, only a new railway across India made the challenge feasible. Today, 144 years later, we can reach most places in the world within just a few hours.
*****Atmospheric CO2: drivers (animation) Discussion While we measure the amount of CO2 in the atmosphere in mere parts per million (ppm), this small amount has a substantial effect on the temperature at the surface of the Earth. The amount has now increased by 40% since the industrial revolution, leading directly to increased temperatures worldwide. There are four main drivers of the changes in the level of CO2 in the atmosphere.
Mt Hope installed as 'UK's highest peak' Image copyright BAS/Alan Vaughan Britain has a new tallest mountain. Mt Hope, which is sited in the part of the Antarctic claimed by the UK, was recently re-measured and found to tower above the previous title holder, Mt Jackson, by a good 50m (160ft). Hope is now put at 3,239m (10,626ft); Jackson is 3,184m (10,446ft). The map-makers at the British Antarctic Survey (BAS) were prompted to take another look at the mountains because of concerns for the safety of pilots flying across the White Continent. Fingernail absolves lead poisoning in death of Arctic explorer Nature Picture Library/Alamy Stock Photo John Hartnell's grave marker on Beechey Island. Detailed chemical mapping of a dead man’s fingernail has illuminated the fate of a sailor in an ill-fated expedition to the Arctic. In one of the biggest unsolved mysteries of the north, a 129-member crew, led by English explorer John Franklin, disappeared in 1845 during its search for the Northwest passage. Some researchers have blamed the deaths on lead poisoning — caused by the metal leaching from food tins or the pipes that routed drinking water around the expedition's ships. Lead exposure can trigger symptoms including neurological problems, which could have ultimately doomed the exhausted explorers.
We built a sim of world's climate battle – here's what happened when delegates played it at COP24 It is the middle of the 2040s. After years of warning, scientists have just confirmed that the tipping point for the West Antarctic Ice Sheet has been triggered. Governments around the world are horrified as the news filters through. Antarctic glacier's rough belly exposed Media playback is unsupported on your device The melting Antarctic ice stream that is currently adding most to sea-level rise may be more resilient to change than previously recognised. New radar images reveal the mighty Pine Island Glacier (PIG) to be sitting on a rugged rock bed populated by big hills, tall cliffs and deep scour marks. Such features are likely to slow the ice body’s retreat as the climate warms, researchers say. The study appears in the journal Nature Communications.
Vintage Maps of Mount Everest From National Geographic Archives On this day, 65 years ago, Sir Edmund Hillary and Tenzing Norgay became the first people to reach the summit of Mount Everest. Hillary described the moment to National Geographic the following year in the July 1954 issue: “We are there. Nothing above us, a world below.”