Tom's SciCast

Sometimes, I get riled up and strongly disagree with other scientists, including some paleontologists who don't think we are currently in the 6th mass extinction.  Sadly, the latest evidence clearly …

How did we get to our modern world teaming with plant and animal life? It was a long road taking billions of years and four key innovations along the way that paved the way for plants and animals.  

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Did you know plants can sense and respond to their environment! Far more than just passive observers, plants use many senses from detecting light, to water in their roots, and they even known when th…

Although species are fundamental to evolution, it has proven difficult to develop a single definition  we can use on millions of  organisms including plants, animals,  their fossils, or even asexuall…

Sometimes, teaching lessons  on plants is a "hard sell" for many students. So, I made this podcast explaining why plants are important for evolution, for ecosystems, for society, and even for own hap…

Is evolution a fact or a theory? Why did Darwin's theory of evolution by natural selection not only revolutionized science, but is also considered one of the most important theories in all of science…

There's a common pattern to the attacks on science, climate change is no exception. Sadly, ignoring science has serious consequences for society.

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Despite the overwhelming evidence, some people still debate whether the climate is changing or if humans are causing it. Tom Kennedy explains how we know the climate is changing and how we can rule o…

Assuming we can't go faster than light, it would take  centuries to travel even to the nearest star.  Can we build a multi-generational spaceship? Tom Kennedy takes a look  the  challenges of humans …

Each year, thousands of freshman biology students learn cellular respiration, but why? Tom Kennedy takes a larger look at cellular respiration showing that it's at the  heart of our cellular metaboli…

There's more to cells than memorizing a few organelles. They are incredibly complex, they are found everywhere, and they affect almost every aspect of our life. Listen in as I talk about the diversit…

Have you ever wondered why too much corn syrup or high fructose corn syrup is bad for you? Or, have you wondered if artificial sweeteners are safe? Did you know that carbs are more than just a source…

Welcome to my new podcast! Most of us have had science classes, but what exactly is science? Why is it important? Listen in as I discuss how science begins with curiosity, needs imagination,  how we …