The World’s Most Unavoidable Carcinogen

Out in the open air on a beautiful summer day, most people don’t realize that they’re bathing in the world’s most common carcinogen – the sun’s rays. Ultra violet (UV) rays to be exact. Let’s take a look at how UV rays affect your body, and the sorts of built-in chemical defense systems you’re working with to stop any potential damage.

Find us on all these places:

5 Weird Ways Plants Can Eat Animals

Why have some plants evolved to eat meat?

Follow Julian on Twitter:

Read More:
Energetics and the evolution…
“Carnivory has evolved independently at least six times in five angiosperm orders.”


Canadian Space Agency (CSA) grants to students to attend the International Astronautical Congress (IAC) of the International Astronautical Federation (IAF).

csaOnce again this year, the Canadian Space Agency (CSA) will be awarding grants to students wanting to attend the International Astronautical Congress (IAC) of the International Astronautical Federation (IAF).

This international assembly is billed as an excellent gathering point for all specialists in the space sector. For students, it is an opportunity to forge valuable ties with professionals and other students from all over the world who share their interests. Throughout the Congress, students will have a chance to talk to professionals, learn from their expertise and listen to their vision of the future of space exploration. Students are full participants in the Congress, lending its workshops and plenary sessions a new energy and outlook that are greatly appreciated.

The IAC mainly draws students specializing in space-related disciplines. In recent years, however, many students from outside these disciplines, though in associated fields (e.g. engineering, law, medicine), have taken part. For many students, the IAC is an event that motivates and inspires them to pursue their studies and set their career goals.

Click here for more details 

Newsroom : Ontario Launches Challenge to Spend More Time in Nature

Ontario Launches Challenge to Spend More Time in Nature Time Spent in Natural Settings Has Positive Impact on Mental and Physical Health

July 25, 2016 11:00 A.M.

Ministry of Natural Resources and ForestryThe Ontario government and Ontario Parks are challenging people across the province to spend more time in nature and develop new healthy habits.Inspired by the David Suzuki Foundation’s 30×30 Challenge, the Ontario Parks 30×30 Nature Challenge encourages people to spend at least 30 minutes per day in nature for 30 days. This year’s challenge begins in August.

Source: Newsroom : Ontario Launches Challenge to Spend More Time in Nature

Redox Reactions: Crash Course Chemistry #10

All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they carry energy with them, and that transfer of energy is what makes all life on earth possible.

**Special Thanks to Matt Young at the University of Montana (Geosciences Department, Environmental Biogeochemistry Lab) who helped with the chemical demonstrations.**

Oxidation 1:42
Reduction 1:03
Oxidation Numbers 3:29
Redox Reactions 5:59
Oxidation Reactions 6:28
Balancing Oxidation Reactions 7:18

Also thank you to the following chemistry teachers for assistance:
James Sarbinoff
Rachel Wentz
Edi González
Lucas Moore
Chris Conley
Addie Clark
Julia Rosinski

Want to find Crash Course elsewhere on the internet?
Facebook –
Twitter –
Tumblr – Support CrashCourse on Subbable: