In a first-of-its-kind test for planetary defense, NASA’s DART spacecraft is scheduled next week to crash into an asteroid and alter the celestial body’s course.
If all goes according to plan, on September 26th at 7:14 pm Eastern Daylight Time, NASA’s DART spacecraft will meet a fiery end. DART, whose name stands for Double Asteroid Redirection Test, is poised to intentionally crash into an asteroid that, at the time of impact, will be 11 million km from Earth. The goal of the mission is to alter the speed and trajectory of the impacted space boulder. The technology developed for the mission could one day aid in shifting the orbit of an asteroid that—unlike this one—is on a collision course with Earth.
“Our DART spacecraft is going to impact an asteroid in humanity’s first attempt to change the motion of a natural celestial body,” said Tom Statler, a scientist in NASA’s planetary defense team, in a recent press conference about the mission. “It will be a truly historic moment for the entire world.”
Australia is the driest inhabited continent on planet earth, and is home to The Great Australian Desert which is the 4th largest desert in the world after The Antarctic, The Arctic and The Sahara. Australia is comparable in size to The United States however its population is significantly less than America’s, the whole of Australia has about the same number of people living in it as the state of Texas. Despite the low population Australia is one of the worst developed countries in the world for broadscale deforestation, wiping out endangered forests and woodlands. In fact, they have cleared nearly half of all forest cover in the last 200 years!
It began in around the early 1800s when the British colonized Australia in search of land and fortunes. At that time Britain had already been completely stripped of trees for centuries by intensive agriculture and war, even today The United Kingdom has one of the lowest percentages of forest cover in Europe. British timber companies were granted free access to vast areas of virgin forest in Australia and trees were felled for agriculture and railway tracks which were constructed alongside other transit infrastructure such as roads, bridges and jetties.
By the 1880s concerns about stripping the forests were being raised but no steps towards conservation were taken and now Australia has become the worst offending country in the world for mammal extinctions, 55 wildlife species plus 37 plant species have gone extinct. The wide spread deforestation has resulted in 55% of all Australian land area being used for agricultural purposes and around 72% of all agricultural output is exported. Meat and live animals has been the fastest-growing export segment, growing 33% in value, However agriculture only accounts for 1.9% of value added (GDP) and 2.5% of employment in 2020–21.
The wide spread land degradation has resulted in man made desertification after centuries of tiling, and the introduction of non native grazing grasses has taken its toll on the landscape. However some regions in Australia are starting to turn this around, transforming large areas of degraded land back into bio-diverse ecosystems, by restoring millions of trees and in turn improving the lives for rural farming communities, as well as capturing over a million tons of carbon to benefit the planet as a whole. This can be considered a major accomplishment for any country, particularly one that has a low average rainfall of 16 inches per year. In this video we will show you how a 200km long green corridor will connect 12 nature reserves across a 10,000 km².
Underwater robots that peered under Antarctica’s Thwaites Glacier, nicknamed the “Doomsday Glacier,” saw that its doom may come sooner than expected with an extreme spike in ice loss. A detailed map of the seafloor surrounding the icy behemoth has revealed that the glacier underwent periods of rapid retreat within the last few centuries, which could be triggered again through melt driven by climate change.
Thwaites Glacier is a massive chunk of ice — around the same size as the state of Florida in the U.S. or the entirety of the United Kingdom — that is slowly melting into the ocean off West Antarctica (opens in new tab). The glacier gets its ominous nickname because of the “spine-chilling” implications of its total liquidation, which could raise global sea levels between 3 and 10 feet (0.9 and 3 meters), researchers said in a statement (opens in new tab). Due to climate change, the enormous frozen mass is retreating twice as fast as it was 30 years ago and is losing around 50 billion tons (45 billion metric tons) of ice annually, according to the International Thwaites Glacier Collaboration (opens in new tab).
The Thwaites Glacier extends well below the ocean’s surface and is held in place by jagged points on the seafloor that slow the glacier’s slide into the water. Sections of seafloor that grab hold of a glacier’s underbelly are known as “grounding points,” and play a key role in how quickly a glacier can retreat.
The paper argues that AI may want to take control and do its own thing.
Artificial intelligence (AI) has been making impressive progress and has, in many ways, improved the world. But could it become dangerous? A new paper co-authored by the University of Oxford and Google DeepMind researchers published last month in the peer-reviewed AI Magazine.
Devrimb/iStock.
A new paper co-authored by the University of Oxford and Google DeepMind researchers published last month in the peer-reviewed AI Magazine argues that it could. The research stipulates that artificial intelligence could pose an existential risk to humanity.
For the first time, volcanologists reveal to IE real-time observations of the deepest parts of a volcanic system.
Scientists from the University of Iceland and the Icelandic Meteorological Office, Reykjavik, have presented unexpected observations of seismic activity and magma movements before and during the 2021 Fagradalsfjall volcanic eruption, according to a pair of papers published in Nature.
The insights could provide a boost in understanding the processes that drove the unusually ‘silent’ eruption and for future monitoring of volcanic activity. This is critical for creating warnings to prevent loss of life and damage to infrastructure. Beboy_ltd.
