In Italy, about 500 Venetians wheeled shopping carts and wheeled chairs through the streets of Venice on Sept. 12, protesting mass tourism.

On Sept. 25, hundreds of protesters in boats blocked cruise ships from entering the Venetian Lagoon, claiming that the large ships and the enormous influx of tourists damage the city and the local environment. 

It is estimated that 60,000 tourists visit Venice, a city with a population of 55,000, each day.

On Sept. 9, a Portuguese train traveling from Vigo, Spain, south to Oporto (Porto), Portugal, began to sway and then hit the side of a bridge, derailing and killing four people, including one American. Forty-seven people were injured. 

The train derailed just before reaching the station at the city of O Porriño, Spain. Investigations of the train’s black box recorder show that excessive speed may have led to the crash.

More than 1,000 cases of chikungunya were reported in Delhi, India, in September, though many more cases are likely to have gone unreported. Though the disease is not lethal, complications arising from it are suspected of killing 10 people. 

Chikungunya is a viral disease that is spread by the Aedes aegypti and A. albopictus mosquitoes. Symptoms include fever and, especially in the hands and feet, aching joints. Symptoms usually last a few days, but they can last for more than a...