Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog – Page 10727

Hyperloop One this week announced that it completed the first full-scale test of its high-speed transportation system, a move the company hailed as the burgeoning technology’s “Kitty Hawk moment.”

The test vehicle only reached 70 miles per hour, a tenth of the company’s eventual target speed. But the firm felt assured enough to set another phase of testing for later this year, when they hope to reach 250 miles per hour. Eventually, the system could reach a top speed of 700 miles per hour, nearly the speed of sound.

The Hyperloop’s potential velocity has helped it captivate the public’s imagination ever since Tesla and SpaceX CEO Elon Musk popularized the concept in 2012. But the proposed system, a sort of high-speed train that uses aerodynamic pods propelled through a vacuum cylinder, is not just about speed, according to many of the people developing it since Musk open-sourced the idea. It’s about changing how we think about moving people and cargo, a $1.48 trillion industry in the United States alone.

Read more

The report found that more than half of global industrial emissions since 1988 – the year the Intergovernmental Panel on Climate Change was established – can be traced to just 25 corporate and state-owned entities. The scale of historical emissions associated with these fossil fuel producers is large enough to have contributed significantly to climate change, according to the report.

A relatively small number of fossil fuel producers and their investors could hold the key to tackling climate change.

Read more

Greenland’s ice sheet, the planet’s second largest after Antarctica, is melting at an alarming rate, losing an estimated 90 cubic miles of ice a year. The melt water that ends up in the ocean is raising sea levels. And then there are the countless glaciers in the Alps, Andes, Himalayas, Rockies and Tibetan Plateau, all melting as our unceasing carbon dioxide emissions — a staggering 35 to 40 billion tons a year — trap more and more heat.

As the Trump administration dismantles the federal government’s efforts to respond to global warming, the natural world has come calling with a reminder: An iceberg the size of Delaware broke off Antarctica’s Larsen C ice shelf in recent days, yet another indication of the rapid change now occurring on the world’s iciest continent.

This is the third floating ice shelf in recent years in Antarctica’s Weddell Sea to fully or partly break up, the first two subverted by warming ocean waters and air temperatures. The Larsen A broke up in 1995. Seven years later, after months of unusually warm temperatures, the Rhode Island-size Larsen B shelf became riddled with meltwater ponds, then fell apart virtually overnight, shattering into millions of pieces. Now a 120-mile-long chunk of the Larsen C has calved, forming one of the largest icebergs ever observed.

The ice shelf has been floating in the frigid waters on the eastern side of the Antarctic Peninsula for at least 10,000 years. It was in the Weddell Sea that Ernest Shackleton’s ship, Endurance, became trapped in ice in 1915, forcing him and his crew to abandon ship in an epic battle for survival. Now a region that not long ago saw only snow and ice is experiencing — at least in its northern reaches — rain in summer.

Continue reading “Warnings From Antarctica” | >