You may have heard rumours that deodorants and antiperspirants could cause breast cancer. But these concerns were started by an e-mail hoax. There is no convincing evidence that antiperspirants and deodorants cause breast cancer. Why are the claims about deodorants and breast cancer wrong? The original e-mail claimed that antiperspirants stop your body from sweating out poisons. It suggested that these toxins build up in the lymph glands under the arm and cause breast cancer.
Sharks Have Been Around For Longer Than Trees. The earliest sharks swam through Earth's oceans around 420 to 450 million years ago, a time when there were no true trees on land. Paleontologists can trace the history of sharks this far back by examining fossilized shark teeth and scales.
Lately, GPS systems have brought a new way to track migration and how long do sharks live, providing more accurate information about them. Shark lifespan vary by kind and it is very different for each of them. While many types live 20 to 30 years in the wild, there are some types that live much longer than others.he typical life expectancy in the wild for Hammerhead Sharks is from 20 to 30 years approximately. Whale sharks (Rhincodon typus) are also believed to live above 100 years, suggesting that the time to reach maturity is longer and young will take longer to born, making this type of shark more vulnerable.