This photograph of a tigress named Busaba was selected out of more than 22,000 entries from over 150 countries as the Grand Prize Winner and Nature Winner of the National Geographic Photo Contest for 2012. Photographer Ashley Vincent said of her winning shot, taken at Khao Kheow Open Zoo in Thailand:
"I had taken many portraits of Busaba previously and it was becoming more and more difficult to come up with an image that appeared any different to the others. Which is why I took to observing her more carefully during my visits in the hope of capturing something of a behavioural shot. The opportunity finally presented itself while watching Busaba enjoying her private pool then shaking herself dry."
See the winners in all three categories — nature, places and people — at National Geographic. Link
(Image credit: Ashley Vincent)
Love cute animals? View more at Lifestyles of the Cute and Cuddly blog
Comments (1)
From what I've seen before, it basically had four radiation detectors: Geiger-Muller tube counter (which unfortunately is and was kind of expensive, leading to cheaper kits with everything else), an electroscope, which is something you can build from household items, a phosphor based detector, and a cloud chamber. A cloud chamber lets you see paths of ionizing radiation and building one was one of the more fond memories I had from middle school. The kit also had a selection of small radioactive sources , something else still available from educational supplies (price has gone up a lot in the couple decades since I last bought some). These are not particularly dangerous as long as they are kept outside of the body, like a lot of things in our day-to-day life.
And for that matter, elemental and many other forms of mercury have virtually no evidence linking it to causing cancer in humans, with some evidence in animals for methymercury. It is still a very dangerous substance without care and not something I would give to a kid, but it is not dangerous because it causes cancer.