Earth Changes
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©Queen Mary, University of London |
Spider attacking a foraging bumblebee. Bumblebees can even learn to outwit colour-changing crab spiders. |
Bumblebees learn to avoid camouflaged predators by sacrificing foraging speed for predator detection, according to scientists from Queen Mary, University of London.
One of the bumblebee's main predators is the crab spider. Crab spiders hunt pollinating insects like bees and butterflies by lying in wait on flowers, and are particularly difficult for their prey to spot because they can change their colour to blend in with their surroundings.
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©Unknown |
With a tropical storm warning issued Saturday for Gonaives and other parts of Haiti, some residents climbed on top of cars to reach the second floor of their homes, where they had piled up furniture and spread sheets to provide shade, said Holly Inurreta of Catholic Relief Services.
"We are very concerned about Ike," she said. "Any bit more of rain and Gonaives will be cut off again."
The official Xinhua News Agency said the flood occurred early Sunday morning in Henan province. The report cited local authorities as saying that about 20 people were trapped underground.