We know how damaging and costly, in many ways, such natural phenomena can be — but the devastation is not surprising, once you know how much energy is involved, says astrophysicist Marcelo Gleiser.

 

America seems to be a magnet for devastating hurricanes these days. This year, Harvey came out strong with its horrific toll on parts of Texas and Louisiana. Now Irma, downgraded slightly Friday morning to a Category 4 storm from its most recent days as a Category 5, has left destruction in its wake as it plows through the Caribbean and Cuba — and is on path to hit Florida Sunday morning.

 

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Most of the papers analysing ranking results only use the data from the top 500 universities, a sample that is clearly not very representative for most of the countries. For example, although there are countries where the whole set of their universities are in the upper category, others as important as the USA, that has a lot of universities in the elite, also shows over 2000 of its HEIs beyond the 5000th mark.

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