Spiders in Pakistan encase whole trees in webs

Eerie phenomenon may be a blessing in disguise, as the hungry spiders have significantly reduced the mosquito population.

Even the elders in Pakistan's Sindh province admit they've never seen anything like it: whole trees encased in webs by millions of invading spiders. The mysterious phenomenon may be an unexpected result of the devastating floods that swept over Sindh in 2010, reports Wired.

According to scientists, the spiders likely collected in the trees after fleeing from the rising floodwaters. At their height, the floods covered as much as a fifth of the country and displaced as many as 20 million people. Story Here