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Thursday, March 21, 2019

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Analemma

A lemniscate is any of several figure-eight orshaped curves. The word comes from the Latin "lēmniscātus" meaning "decorated with ribbons", from the Greek λημνίσκος meaning ribbons.  In astronomy, an analemma (from Greek ἀνάλημμα analēmma "support") is a diagram showing the deviation of the Sun from its mean motion in the sky, as viewed from a fixed location on the Earth. An analemma can be traced by plotting the position of the Sun as viewed from a fixed position on Earth at the same clock time every day for an entire year, or by fixed camera taking time lapse pictures throughout one year. The resulting curve resembles a long, slender figure-eight with one lobe much larger than the other, known as a lemniscate of Bernoulli.

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atelier Lascaux image

More than 50 years after the Lascaux caves in southwestern France were closed to the public, a new exhibition has opened. Lascaux 4, a spectacular replica of France’s most celebrated cave art using interactive guides and multi-screen displays, opened on 15 December, 2016. The new International Cave Art Centre is located in Montignac, Dordogne, in the southweste region of France.

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climate change economy aurich lawson ars technica

Major floods have been taking place in the UK during the begining of 2014. South-west England has been worst hit, with many homes still flooded and part of a key railway line destroyed.The accelerating pace of extreme weather events is an acute challenge to political leaders.  On November 8, 2013, a devastating typhoon struck the south-central islands in the Philippines. There were early warnings of what was to come, but over 6,000 people were killed and hundreds of thousands of homes and livelihoods destroyed.

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Center Town Sign under Water UK

Floods in the United Kingdom

The effects of climate change are already evident in Europe and the situation is set to get worse, the European Environment Agency has warned.  In a recently released report, the agency says the past decade in Europe has been the warmest on record. It adds that the cost of damage caused by extreme weather events is rising, and the continent is set to become more vulnerable in the future. The findings have been published ahead of next week's UN climate conference.

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Screen Shot 2016 11 26 at 12.55.00 PM

A group of scientists has taken the first important steps towards creating the Human Cell Atlas—a complete inventory of our staggeringly diverse cells.  Steve McCarroll announced earlier in 2016 that his team had discovered the gene that most powerfully drives our risk of schizophrenia. Known as C4, it was previously viewed as an immune-system gene, but clearly, it also does something in the brain.