At least 14,000 people were stranded at the Inca citadel of Machu Picchu last week after a mudslide blocked the railway to the site. The high-altitude line was covered by more than 3m of earth.
Tourists had to leave by road.
Women are more environmentally friendly than men, an EU survey of attitudes shows. It showed that 83% of women would recycle household waste, compared with 74% of men. It also found that 67% of woman would cut water and electricity use compared to just 59% of men.