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Tag: Science

AAAS: Machine learning 'causing science crisis'

AAAS: Machine learning 'causing science crisis'

Science
Machine-learning techniques used by thousands of scientists to analyse data are producing results that are misleading and often completely wrong.Dr Genevera Allen from Rice University in Houston said that the increased use of such systems was contributing to a “crisis in science”.She warned scientists that if they didn’t improve their techniques they would be wasting both time and money. Her research was presented at the American Association for the Advancement of Science in Washington.A growing amount of scientific research involves using machine learning software to analyse data that has already been collected. This happens across many subject areas ranging from biomedical research to astronomy. The data sets ...
Ten big science stories of 2018

Ten big science stories of 2018

Science
The year 2018 provided plenty to chew on if you're interested in science and the environment. From the stark warning from climate scientists about the dangers of letting temperatures rise beyond 1.5C to the discovery of a 20km-wide liquid water lake on Mars, it was a memorable year.Here's a rundown of some of 2018's most eye-catching stories. A "safe" limit for warming A rise in global temperatures of 2C by the end of this century has long been seen as the gateway to dangerous climate change. Researchers had argued that keeping within this limit was necessary to avoid the most damaging effects of global warming.But some have been pushing for an even lower target of 1.5C. In October, climate scientists released a major report detailing what would be involve...
Science Says: A big space crash likely made Uranus lopsided

Science Says: A big space crash likely made Uranus lopsided

Technology
Uranus is a lopsided oddity, the only planet to spin on its side. Scientists now think they know how it got that way: It was pushed over by a rock at least twice as big as Earth. Detailed computer simulations show that an enormous rock crashed into the seventh planet from the sun, said Durham University astronomy researcher Jacob Kegerreis, who presented his analysis at a large earth and space science conference this month. Uranus is unique in the solar system. The massive planet tilts about 90 degrees on its side, as do its five largest moons. Its magnetic field is also lopsided and doesn't go out the poles like ours does, said NASA chief scientist Jim Green. It also is the only planet that doesn't have its interior heat escape from the core. It has rings like Saturn, albeit faint ones....
In posthumous message, Hawking says science under threat

In posthumous message, Hawking says science under threat

Technology
Stephen Hawking spoke from beyond the grave Monday to warn the world that science and education are under threat around the world. The words of the scientist, who died in March at 76, were broadcast at a London launch event for his final book "Brief Answers To The Big Questions." Hawking warned that education and science are "in danger now more than ever before." He cited the election of U.S. President Donald Trump and Britain's 2016 vote to leave the European Union as part of "a global revolt against experts and that includes scientists." Acknowledging that science had yet to overcome major challenges for the world — including climate change, overpopulation, species extinction, deforestation and the degradation of the oceans — the physicist still urged young people "to look ...