If you really want to understand colour, then you have to wrap your head around additive and subtractive colour theory. And where better to do that than at the Ontario College of Art and Design in Toronto?

Electricity and magnetism are endlessly fascinating. And this is such an amazing demonstration because the result is so unexpected. It even amazes all the smart students at the University of Calgary!

It's a simple concept really. Take engineering students from across Canada and challenge them to create a sliding surface made from concrete. Attach a crew compartment to the top, add some brakes, and you have a toboggan! Then put five of engineers into their contraption and push them down a snowy incline. Stand back and watch the fun! Just stand clear!

World champ Jeff Buttle joined us to explore how a skater applies linear and angular momentum to execute a triple lutz. We broke the jump into four components and, with the help of a high-speed camera, were able to see how the skater efficiently uses speed, muscle power, and exquisite timing, to perform such a complex jump.

The experiment here was straightforward. What's the effect of the overall mass of the sliding sled and crew on speed and elapsed time? Our test? Run with a light brakeman, and then run the same sled and driver with a much, much heavier brakeman. That would be me. We ended up with about a 35 kg (80 lb) difference between the two sleds. What happened? Watch and find out!

We enlisted the help of four snowboarders at Mt. Norquay in Banff National Park to demonstrate how Newton's third law (for every action, there is an equal an opposite reaction) must be obeyed if you want to execute those fancy rolls and spins in the air!

Wow! Playing hockey with Hayley Wickenheiser, the most accomplished female hockey player on the planet! Time to get schooled! Hayley's job? See if she can help me with my anemic slapshot!

Mirrors and lenses are extraordinary devices for manipulating light.

If you want to know what makes your cel phone vibrate, then check out this piece, filmed at McMaster University in Hamilton. It's all done with a tiny motor with an off-centre weight attached to the spinning shaft.

One of the greatest spectacles in sport is ski jumping. Jumpers launch themselves at speeds in excess of 100 km/h in an effort to soar as far as possible. The moment they leave the jump, however, they become a projectile, falling to Earth under the ceaseless grip of gravity. Each jumper's ability to exploit the air flowing around his or her body is the key to success!

Making snow is not a simple matter. So we went to Whiteface Mountain at Lake Placid, New York, to find out how we try to replicate Mother Nature.

Colour is light and light is colour! Or something like that. And where better to play with the science of colour than at the Ontario College of Art and Design in Toronto. We took the Alan Nursall Experience there to mix chemistry and colour with the students and faculty.

It's time for me to get my hands dirty - literally - and start mixing up some concrete with the engineering students at McMaster University in Hamilton. Why? To build a toboggan, of course!

Water finds its own level - most of the time! But in this outing to the Scarborough Town Centre, we create a truly bizarre phenomenon in which water will not flow through a very large opening, even though there is a large column of water piled above it.

Pipes are very effective devices for creating resonant waves. Heck, many of the most common musical instruments - from trombones to flutes to pipe organs - depend on this phenomenon. So how exactly does the big propane torch fit into this?

Helicopters are amazing flying machines, and the pilots who fly them are equally amazing! In this piece, we go flying with Ruedi Hafen, owner and chief pilot of Niagara Helicopters, and we explore the forces at work when you have a spinning system like a helicopter's main rotor.

We challenged Ryerson University engineering students to design and build capsules for a very specific purpose: to safely carry and return to a cargo of one large pumpkin, launched skyward by the monster trebuchet at Whittamore's Farm, just nortn of Toronto! The result - pumpkins flying everywhere, plus one flying pig.

If you like your fruit and veggies, then you'll love PumpkinFest in Port Elgin, Ontario, where the giants from the garden gather!

It's All-Canadian Wonders of the World on this scientific sojourn. Join Alan as he takes a journey of discovery from Ontario to the Prairies! Water is the common thread, from Niagara Falls to Little Manitou Lake to the steam engine. Okay, so the water theme falls apart at the Canadian Light Source in Saskatoon, but it's a really cool facility, so we'll let it pass. Come explore!

If you've ever visited Clifton Hill in Niagara Falls, you can't miss its overarching theme of showy excess, what with all the wax museums, haunted houses, wrestling attractions, and so on. But it's a great place to spend a summer afternoon, losing yourself in the fun and jollification.

When it comes to riding the rails, it would be difficult to find a more agreeable way to ride than on the Prairie Dog Central Railway just outside of Winnipeg. We spent a beautiful July day there with the rail enthusiasts who keep the heritage trains running, and they let us use their trains for some explorations in physics!

Dr. Seuss's classic Green Eggs and Ham was published in 1960, but it has taken 49 years to bring it to television! And who else but Daily Planet could manage such a Herculean task?

I get lots of science questions from friends, colleagues, strangers, and the occasional vagrant asking for change.

Is there any better way to spend an idyllic summer afternoon in Toronto's Kew Gardens than dissolving pennies in acid? If there is, I haven't heard about it!