12-09-26 Imagine a clock that will keep perfect time forever, even after the heat-death of the universe. This is the wow factor behind a device known as a space-time crystal, a four-dimensional crystal that has periodic structure in time as well as space. Ho...

12-06-21 Our vicar（教区牧师） is always raising money for one cause or another, but he has never managed to get enough money to have the church clock repaired. The big clock which used to strike the hours day and night was damaged many years ago and has bee...

12-05-09 Dan was the doorman of a club in a big city. Everyday, thousands of people passed his door, and a lot of them stopped and asked him, What's the time, please? After a few months, Dan said to himself, I'm not going to answer all those stupid people an...

12-03-20 A clock accurate to within a tenth of a second over 14 billion years -- the age of the universe -- is the goal of research being reported this week by scientists from three different institutions. To be published in the journal Physical Review Lette...

12-02-23 Sudden cardiac death -catastrophic and unexpected fatal heart stoppage -- is more likely to occur shortly after waking in the morning and in the late night. In a report in the journal Nature, an international consortium of researchers that includes...

12-01-29 有报告显示，伦敦著名的大本钟加速倾斜，甚至有倒塌的可能性。根据该报告，大本钟向左倾斜约46厘米，已经达到肉眼可以观察的程度。 A Union flag flies near Big Ben and the Houses of Parliament in London October 24, 2011. The landmark clock tower containing B...

12-01-16 Scientists on Tuesday pushed the hands of the infamous Doomsday Clock forward one minute from last year, signalling their increasing pessimism about the efforts of world leaders to handle global threats. 周二，科学家们把邪恶的末日之钟的指针拨快了一...

12-01-11 New research at Oregon State University provides evidence for the first time that disruption of circadian（生理节律的） rhythms -- the biological clocks found in many animals -- can clearly cause accelerated neurodegeneration, loss of motor function...

11-08-28 A caesium（铯） fountain clock that keeps the United Kingdom's atomic time is now the most accurate long-term timekeeper in the world, according to a new evaluation of the clock that will be published in the October 2011 issue of the international s...

11-08-10 Weekend lag is a condition affecting the body's circadian clock, similar to jet lag, but instead stemming from altering one's sleep hours over a weekend of hard partying and drinking rather than from a long flight. 周末时差是跟飞机时差类似的情况，通...