1. Its Academic Ranking of World Universities is made up of six objective indicators, including the number of alumni and staff winning Nobel Prizes and Fields Medals, the number of highly-cited researchers, the number of articles published in the journals Nature and Science, the number of articles indexed in the "Science Citation Index", and their per capita performance.
2. The increase of these and other gases from human activity has caused the planet to warm by about 1.5 degrees Fahrenheit since the preindustrial era, which is causing land ice to melt all over the world. The oceans are rising at what appears to be an accelerating pace, and heat waves and torrential rains are intensifying.
6. 'It is absolutely perfect, absolutely pure externally and internally. It is almost a dream,' said Jean-Marc Lunel, senior international specialist of Christie's jewellery department.