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Mystery of the Chameleon Spider

05.07.2010

Crab spiders are known, which can change their color depending on the color of the flower, in the petals of which they hide, waiting for the victim. It is believed that spiders "repaint" for camouflage. Swiss zoologist Rolf Brechbühl set out to test this theory.

Together with colleagues, he filmed about two thousand episodes of landing insects on flowers, in which eight-legged predators were hiding. It turned out that the hunt was successful only in 3,6% of cases, and its result did not depend on whether the spider took on a camouflage coloration.

It is possible that insects notice the hunter not in the visible range for us, but in the ultraviolet range. Then Brechbühl decided to test another hypothesis: perhaps spiders are hiding not from their victims, but from predators - birds that can peck at them. They tried to transplant spiders onto flowers of a contrasting color, but only in one case did the spider become a victim of a bird. So the meaning of color masking remains unclear.

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Automatic customs clearance system 18.11.2014

New York City's John F. Kennedy Airport Terminal 5 has 41 new kiosks to automatically pass the border. JetBlue flights arrive at this terminal.

Self-service kiosks at the border allow travelers to provide their travel document, biometrics, and customs declaration prior to talking to US Customs and Border Protection officers. Thus, the queues for entry and the amount of work of customs officers and border guards are significantly reduced.

"JetBlue is committed to making flying an enjoyable experience, and that includes the arrivals process for our international passengers," said Eash Sundaram, the airline's Chief Information Officer.

Automated passport control (APC) kiosks manufactured by SITA have previously been approved by US Customs and Border Protection. These kiosks provide accurate biometric data and fingerprints of the passenger and compare them with the data in the passport.

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