The U.S. Army has just put more than a billion dollars into a new air defense system called IM-SHORAD to protect soldiers from drone attacks. It is a vital mission – but the last time the Army tried to develop something like this the project failed horribly. And even if the new system works as intended, serious questions remain.
The U.S. has enjoyed air superiority, if not air supremacy, in every conflict for decades. American planes have swept the enemy aircraft from the sky or destroyed them on the ground. The last time an American soldier was killed by enemy air attack was during the Korean War. As a result, while the Russians and others have continued to develop generations of armored vehicles carrying surface-to-air missiles
Skoda has developed new technology it believes will make car mechanics’ lives easier – or possible make them redundant entirely.
The Czech brand – which sits under VW Group’s ownership – says it has completed successful trials of a smartphone app that can listen to any thuds, bangs or clatter produced by a vehicle and diagnose the problem from the sound alone.
Called the Skoda Sound Analyser, the manufacturer says it has a 90 per cent success rate of identifying issues with cars correctly.
To manage and conserve natural ecosystems, it is essential to know how biodiversity changes. As one of those questions, it is important to know whether we are we gaining or loosing species. However, getting reliable measurements to study this is a complex task. Data can be collected by researchers during field trips, but a vast amount of data is also provided by different initiatives such as citizen science programs. However, to ensure measurements are reliable, samples need to be representative of the real world. If samples are not representative, they are biased.
In their study, scientists from iDiv, UL and MLU showed that a bias can dramatically change the measurements of biodiversity change. They focused on the so-called site-selection bias, where sampling sites are not selected representatively. For example, if a person wanted to find out how the number of butterfly species is changing in the area over the next
Last week, the popular science journal Scientific American issued its first presidential endorsement in its 175-year history. Much of the editorial, which urges readers to support Joe Biden, is spent on well-founded condemnation of Donald Trump’s environmental record — which the editors rightly associate with an anti-scientific approach to politics:
The evidence and the science show that Donald Trump has badly damaged the U.S. and its people—because he rejects evidence and science…That is why we urge you to vote for Joe Biden, who is offering fact-based plans to protect our health, our economy and the environment. These and other proposals he has put forth can set the country back on course for a safer, more prosperous and more equitable future…It’s time to move Trump out and elect Biden, who has a record of following the data and being guided by science.
The sentiment reflects what has become the standard conception