Hi everyone! I hope you all had a good week. I am looking forward to a nice three-day weekend. I plan on sleeping late each of those three days. And I am very happy about it. I found out that today is “World Dracula Day”. World Dracula Day celebrates the anniversary of the first publication of Bram Stoker’s book Dracula. The book was first published 121 years ago. In honor of World Dracula Day, I thought we should learn about vampire bats. Even before Europeans came to the Americas, they had stories about vampires. The early vampires were monsters, but not really bats. The association with bats came with Stoker’s book. After the publication of the book, these cute little bats got their name. The book didn’t really help their reputation, so in an attempt to improve their image, let’s learn the truth about these little critters. First, there are three kinds of vampire bats. They all live in Central and South America, not Transylvania. And all they eat is blood. They don’t eat any other food or even drink water. Because of their diet, vampire bat guano has a very strong smell. This makes it easy to find their roosts. Vampire bats don’t really want to drink human blood. They usually feed off livestock animals and birds. Since these bats are small, they only consume about a tablespoon of blood. That means that the animal they use for their meal might not even realize they have been bitten. One interesting characteristic of vampire bats is that their nose is able to sense heat, which helps them find blood vessels. Another interesting characteristic is that vampire bats can run. Their ancestors lost the ability to run when they developed the ability to fly. But these bats re-evolved to be able […]
Hi everyone! I hope you all had a good week. It has been a very wet one here in the DC area. It has rained and poured pretty much all week. The plants are all really happy, but I feel sorry for all the little critters. There are some pretty wet looking little squirrels in my neighborhood and I think the little bats must all be soaking too. I hope they are able to dry out soon and fly around to find some yummy little bugs to eat. Meanwhile, I have some batty math news. You know how you learn a lot of stuff in school and you wonder when you’ll ever get to use it? I often feel that way. I mean, when am I ever going to really need to be able to graph an algebraic function in my day to day life? Well, a woman named Alice Nasto has managed to demonstrate a wonderful use of some of the math that she learned in school! It’s a lot of math that I don’t understand, but it proved useful to her. Ms. Nasto is a mechanical engineer at the Massachusetts Institute of Technology in Cambridge. She was studying hairy structures and how they trap liquids. Since the tongue of a Pallas’ long-tongued bat is covered with long, hair-like structures, she decided to study how this bat’s tongue works. She realized that all the little hairy structures on the bat’s tongue increase the tongue’s surface area. So, there is more space on the tongue for nectar to stick to. Ms. Nasto used a lot of fancy math to discover whether or not the Pallas’ long-tongued bat’s tongue was as efficient as it could be. She and her team of scientists ran experiments with four different models of sample tongues. […]
Hi everyone! I hope you all had a good week! I enjoyed my last week before standardized testing begins. I only have one test a week for the next two weeks, but I still wish I didn’t have to take them. I have some exciting news. The oldest common mouse-eared bat fossil ever found has been discovered in Belgium! The bones were found back in the 1990’s. They found teeth, fragments of the bat’s jaw, and some other small bones. Not only are these fossils cool to look at, they also prove that the mouse-eared bats have been flying around this Earth for over 33 million years! What is really amazing is that after 33 million years, the mouse-eared bats don’t seem to have changed much. Scientists had previously estimated how long these bats have been on Earth. This new discovery shows that they were off by about 7 million years. Researchers think that the reason the bats have survived this long is that bats are the only flying mammal. This means they don’t need to compete for food and other resources as much as other animals. Hopefully this also means that we’ll have our furry friends flying around for a long time to come. If you would like to read more about this amazing discovery, you can find the article here I would like to wish all the moms out there a very Happy Mother’s Day! I hope you all have a fantastic day!