Hydrogen is the most abundant element in the universe. We have a lot of it on Earth and if we can safely use hydrogen fuel then it becomes a very appealing energy source because it turns into water when it burns. Because it’s such a small molecule, storing it is tricky because any tiny cracks or gaps will cause it to escape, which is generally a bad thing. This is why Jonas Welsch, a PhD student in Electrical Engineering at the University of British Columbia, is studying ultrasonic transducers and how they can be used to monitor for leaks. Katie and Vinny talk about hippos and teeny pulses of light.

The world is built around fossil fuels. Cars, shipping, air travel, it’s all powered by carbon emitting combustion engines. What if we could use something else? What if we could use chicken fat?? That’s exactly what Master’s student Zak Kaal is researching at the University of Alberta .Vinny and Katie talk about asteroids and immune systems.

Yeast is everywhere. We use it to make bread and beer but it’s a fungus with its own biology. Science is turning to yeast once again to make wonderful things for us. We can bioengineer it to turn its natural processes into building compounds that humans can use, like medicine. That’s the research being done by this episode’s guest, Asia Vighi, a PhD student in Bioengineering at McGill University. Katie and Vinny talk about heat sensing and how babies feel pain.