The Tour de France is one of the world’s most gruelling events. Over 23 torturous days, competitors will cover more than 2,100 lung-bursting miles. They will train for years in the hope of clinching a coveted yellow jersey.
Yet when it comes down to pure endurance, research suggests another group easily outperforms these elite cyclists: pregnant women.
A review of some of the world’s most physically demanding pastimes suggests that even the most impressive human specimens will hit a ceiling that determines how long they can sustain their activity.
A necessidade se fez tradição. Durante séculos, por altura do São João, os pastores iam para a estrada e conduziam milhares de ovelhas e cabras, sob o olhar atento dos cães, desde o sopé da Serra da Estrela até ao cimo da Serra de Montemuro, em busca de melhores pastos. Aí ficavam cerca de dois meses até regressarem, para a transumância de inverno. Desde 2015 que o município de Castro Daire recria a “Última Rota da Transumância”, que se realizou, efetivamente, em 1999. De grande simbolismo para a população, o ritual assinala-se de 21 a 23 de junho e é para celebrar em família.
Half a century ago, the Apollo astronauts left short-lived seismometerson the lunar surface. They found that the moon was alive and kicking. Some tremors deep below the surface likely were caused by Earth’s gravitational pull. Others were vibrations from meteorite impacts. Still others resulted from expansion of the moon’s chilly surface every two weeks when the sun rose.
There were also shallow moonquakes, just a few miles beneath the surface. Unlike the other categories of quake, these convulsions couldn’t be satisfactorily explained. But a study published Monday in Nature Geoscience suggests that they were triggered across myriad young faults by a combination of escaping internal heat and Earth’s gravitational pull.
A radio ridge that connects two huge, merging galaxy clusters has been discovered by scientists. This is the first time a magnetic field has been observed in the filaments in intergalactic space that connect clusters, researchers say.
Galaxy clusters are enormous structures potentially containing thousands of galaxies. They are some of the biggest structures in the universe that are bound by galaxy. They grow by merging with smaller structures in a process that produces a huge amount of turbulence in the gas surrounding both galaxies. In the intergalactic space between two merging galaxies are filaments.
The Abell catalogue is a collection of around 4,000 galaxy clusters and two of these, Abell 0399 and Abell 0401 are currently in the process of merging.
It’s day one of the 2019 Women’s World Cup, and what better way to celebrate it than a Google Doodle?
Friday’s Doodle features a collage of soccer players, each drawn by a different female artist from the country the players represent. It’s the first in a series; in the coming days, each artist will take full control of the Google Doodle to “capture the local excitement of the World Cup competition as well as what soccer means to the guest artist personally,” according to Google.
The tournament, held this time in France, will progress for a month. The Team USA, headed by captain Alex Morgan, is the oddsmakers’ favorite to win.
Simon Knowles, chief technology officer of Graphcore Ltd., is smiling at a whiteboard as he maps out his vision for the future of machine learning. He uses a black marker to dot and diagram the nodes of the human brain: the parts that are “ruminative, that think deeply, that ponder.” His startup is trying to approximate these neurons and synapses in its next-generation computer processors, which the company is betting can “mechanize intelligence.”