Dengue is a disease one can get from a mosquito bite in many third-world countries in the world. Dengue could be lethal the second time one gets it. A vaccine was finally developed, but it can only be given to those who had Dengue once.
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January was the first month on the job for Brazilian president Luiz Inacio Lula da Silva, who promised to save the Amazon forest. Deforestation was
Scientists in England gave bees complex box puzzles with a sugar reward in the end. The researchers found the bumblebees use “social learning” – some
Most sharks are Ecthoterms, cold-blooded fish. The Megalodon was a massive shark that went extinct 3.6 million years ago, and like some shark species, it
