In a direct violation of international rules governing these sporting events, the Iranian government barred women from entry to the Beach Volleyball World Tour event on Kish Island. The FIVB had expressly required Iran to guarantee that women would be allowed to enter and watch the matches. However, the Iranians barred them anyway at the five-day competition.
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I read about a fascinating new scientific study where Emmanuel Virot and colleagues at the Ecole Polytechnique and ESPCI ParisTech have concluded that there is a critical wind speed, of around 42 m/s (90 mph), at which almost all tree trunks break – regardless their size or species. Thus, under a simple scaling law, the critical wind speed is largely independent of the tree’s diameter, height or elastic properties.



