Canadian Space Agency Video: How To Cut Your Nails In Space And Other Tips For Living With Zero Gravity

by Sean McLachlan on


What’s daily life like on the International Space Station? The public has lots of questions, so the Canadian Space Agency, with the help of their astronaut Chris Hadfield, is giving out some answers. Hadfield is currently on the ISS and in this video shows how to clip your nails in zero gravity without them floating all over the cabin.

Hadfield is becoming an Internet sensation with his trademark bushy mustache and his clear, humorous explanations of the minutiae of space travel. He has videos about everything from operating the robotic Canadarm2 to making a sandwich in space, so check out the Canadian Space Agency’s Youtube channel for more insights into life aboard the coolest science laboratory ever made.

Go Canada!

Tourists Amazed By Serengeti Wildebeest Calving

by Sean McLachlan on


February is a special time on the Serengeti. Right now its population of some 1.5 million wildebeests are giving birth to an estimated 8,000 calves a day, the Tanzania Daily News reports.

The East African nation has seen some 16,500 tourists come to watch the event in Serengeti National Park, including 5,800 domestic visitors who are part of a growing African middle class that’s boosting tourism across the continent.

This mass calving happens every year. All the pregnant wildebeests give birth within the same period of a few weeks, a process called “synchronized calving.” The animals give birth while standing up or even moving around, and wildebeest calves are walking within a couple of minutes. Once all the pregnant wildebeest have calved, the whole herd heads out.

These adaptations help protect the calves from predators. You can bet that hyenas, lions and other sharp-toothed critters are flocking to the area along with the tourists. Wildebeests are also hunted by humans to make a kind of jerky called biltong. This is legal in some parts of Africa although, of course, not in the park. One Tanzanian scientist estimated that half the calves will get eaten or die from other causes during the wildebeest’s 600-mile migration.

[Photo courtesy user zheem via Flickr]

Video: A Week In The Life Of The International Space Station

by Sean McLachlan on


The International Space Station is one of the wonders of modern technology. A series of interconnected orbital modules are home to a rotating crew of astronauts and cosmonauts plus a host of ongoing experiments. While the ISS only gets into the news every now and then, interesting things are happening there daily.

Right now three astronauts – two American and one Canadian – are on duty up there along with three cosmonauts from Russia. This video is a weekly update showing what they did last week. The main work has been preparing for the arrival of the Dragon spacecraft, which will bring supplies and take some completed experiments and waste back to Earth.

Besides that, the crew has been conducting experiments, doing maintenance work on their spacesuits, troubleshooting a partial communications failure, training with the robotic arm, and answering questions from the public back on Earth.

The three astronauts even got a break for Presidents Day. I didn’t know they got days off up there. I wonder what they do? Stare out the window a lot, I bet.

The weekly update gets uploaded every Friday and there are daily updates throughout the week. You can followed them on the ISS website.

For more about this giant orbital laboratory take this video tour of the International Space Station.

Pyramids Discovered In Egypt And Sudan

by Sean McLachlan on


You’d think archaeologists would have found all the pyramids of Africa by now, but two recent discoveries show there’s a lot more discovering to be done.

A team of archaeologists working in Luxor, Egypt, have just announced they’ve discovered the pyramid of Khay, a powerful vizier of the Pharaoh Ramses II (ruled 1279-1212 B.C.). The pyramid was made of mudbrick and originally stood 49 feet high.

In the seventh and eighth century A.D. it was dismantled and turned into a Coptic Christian hermitage. Hieroglyphic writing on the surviving bricks told the archaeologists to whom the pyramid belonged.

Earlier this month, archaeologists announced they had found the bases of at least 35 broken pyramids at the site of Sedeinga in Sudan. They’re about 2,000 years old and belong to the kingdom of Kush, which lasted from c.1000 B.C. to 350 A.D. before finally being conquered by the Empire of Axum in Ethiopia. For almost a hundred years from 747-656 B.C., the Kushites ruled Egypt as the 25th dynasty.

The Sedeinga pyramids really just pyramid-shaped tombs. The largest measures 22 feet to a side, while the smallest is only 30 inches to a side. Others in Sudan, such as those at Meroë, are much more grandiose. Those at the pyramid field at Nuri, shown here courtesy Vít Hassan, are up to 150 feet tall.

Last year, a satellite survey conducted by Dr. Sarah Parcak of the University of Alabama found 17 suspected pyramids.

So how could these pyramids go missing? Well, most pyramids were much smaller than the famous ones at Giza and Saqqara that we always see pictures of. Shifting sands and erosion helped hide them. In the case of the Sedeinga tombs, later people took stones from them to build other structures.

Even some sizable pyramids have all but disappeared because they were made of inferior materials. Some of the last pyramids of Egypt are barely visible today because of shoddy workmanship or having been made with mudbrick instead of stone.

Mosquitoes Becoming Immune To DEET, Study Suggests

by Sean McLachlan on


According to a new study, mosquitoes are learning to ignore DEET, the BBC reports.

Researchers at the London School of Hygiene and Tropical Medicine tested the responses to DEET by the Aedes aegypti, a type of mosquito that can carry yellow fever and dengue fever and is thus particularly dangerous to adventure travelers.

In a new study published in the journal PLOS ONE, researchers say that while mosquitoes are at first repelled by DEET’s smell, they soon become accustomed to it and can return bite the wearer. Electrodes attached to the insects’ antennae show that they adjust to the scent of DEET and simply stop smelling it.

This is something I’ve heard campers and hikers comment on for quite some time now. Spending time in mosquito-ridden Missouri, I’ve noticed this trend myself. Missouri has about 55 known types of mosquito, including the Aedes aegypti.

An earlier study has raised questions about DEET being a neurotoxin. It looks like science’s next task is to find a better insect repellent.

I’ve also noticed that mosquito coils, which do not have DEET as an active ingredient, no longer seem to work on Missouri mosquitoes either. I enjoy sitting on the porch swing of my friend’s house reading. It used to be that a burning coil set nearby would keep the bugs away. No more. The last time I tried it the little bastards were attacking me so much I actually put the coil under the porch swing so the smoke rose right onto me. The mosquitoes didn’t seem to care. I soon retreated inside.

[Photo of Aedes aegypti courtesy US Department of Agriculture]