Thousands of animal species use toxic chemicals to defend themselves from predators. Snakes have blood clotting compounds in their fangs, the bombardier beetle has corrosive liquid in its abdomen and jellyfish have venomous, harpoon-like structures in their tentacles. But how do these animals survive their own poisons? Continue reading
The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines. Continue reading
Antarctica is a vast and dynamic place, but radar technologies — from World War II-era film to state-of-the-art miniaturized sensors — are enabling scientists to observe and understand changes beneath the continent’s ice in unprecedented detail. Join radio glaciologist Dustin Schroeder on a flight high above Antarctica and see how ice-penetrating radar is helping us learn about future sea level rise — and what the melting ice will mean for us all.
Today we take a look at six misconceptions about cancer that seem plausible, but just don’t hold up. Continue reading
Massive vines that blanket the southern United States, climbing high as they uproot trees and swallow buildings. A ravenous snake that is capable of devouring an alligator. Rabbit populations that eat themselves into starvation. These aren’t horror movie concepts – they’re real stories. But how could such situations exist in nature? Continue reading
sudan IV, oil and water
Curriculum Connection: High-school Biology
I was preparing Sudan IV for a nutrient lab for grade 11 SBI3C biology. In order to use the chemical as an indicator for fats and oils, I needed to mix the Sudan IV powder with ethanol. I followed proper safety precautions (gloves, goggles, fume hood). Somehow, a small amount of the Sudan IV powder got on my hand. I promptly washed my hands with soap and water, and checked the MSDS which advised me to flush the exposed area with water. After flushing, my hand appeared to be clean. Continue reading
We only know of one planet in our universe that harbours life: Earth. So it’s logical that humanity has focused its search for life beyond our world on planetary bodies. But a new study suggests that we may be leaving out a larger chunk of the cosmos: moons. Continue reading
For decades, we’ve heard how terrible fat is for us, but more recently, sugar has become the new villain. What does the science actually say about these two macronutrients and how they affect our health?
Hosted by: Olivia Gordon