Professor Dave Explains
Nucleic Acids: DNA and RNA
We've been hearing about DNA since the third grade, and we all know that it's a double helix with little ladder rungs. But now we are ready to understand this molecule on a more fundamental level, which will enable to us to understand...
Professor Dave Explains
The Periodic Table: Atomic Radius, Ionization Energy, and Electronegativity
Why is the periodic table arranged the way it is? There are specific reasons, you know. Because of the way we organize the elements, there are special patterns that emerge. And you know how Professor Dave feels about patterns. He likes...
Visual Learning Systems
The Atmosphere: the Atmosphere
Students will learn about the different layers of the atmosphere. The changes in the atmosphere are explained using examples of contemporary environmental conditions brought about by human behavior. The oxygen cycle and the carbon cycle...
Weatherthings
Weather Things: Air
The 3 simple ingredients of sun, air and water lead to every type of weather on Earth. The atmosphere is constantly trying to balance heat from the sun with water vapor and air to create a dynamic planet. The unique properties of the...
Curated Video
A 'less smelly' way of applying manure is also better for the planet, P.E.I. study finds
New ReviewA project on P.E.I. that looked at injecting manure instead of spraying it found benefits for the environment — and happier neighbours. The first summer of testing showed a dramatic drop in greenhouse gas emissions, healthier soil and...
Curated Video
Garden Guide: Fertilizer myths and tips
Our gardens are sprouting back to life! If you’re looking for even better results, fertilizer can give them a boost. Alex Calamia shares some tips and debunks some myths about plant food.
Curated Video
Advancing Climate-Smart Agriculture and Sustainable Food Production
Adam Little, CEO of synthetic biology company Sound Agriculture, joined Cheddar News after his company raised $75 million in Series D financing to discuss business operations and growth.
Curated Video
NASA spacecraft poised to touch down on asteroid Bennu
Scientists are about to land spacecraft on asteroid Bennu, 320 million kilometres from Earth.
Curated Video
Deep-red field turns heads: Crimson clover is a colourful soil builder for this P.E.I. potato farm
Last fall, Summerside-based Linkletter Farms planted crimson clover as a cover crop, to hold potato field soil in place over the winter. Co-owner Mark MacEwen didn't expect it to survive the icy weather the way it does in other...
Curated Video
U.S. State of Alabama's Third Execution Using Nitrogen Gas | GRAVITAS
A man convicted of murdering a hitchhiker 30 years ago has become the third person in the United States to be executed by nitrogen gas.
Press Association
Chancellor visits Quell Therapeutics
Chancellor Rachel Reeves visits the new offices of Quell Therapeutics in London ahead of her Mansion House speech.
Getty Images
Nitrogen atom. Diagram of an atom of the element nitrogen, pulling back from the central nucleus to reveal the surrounding electron orbitals.
Nitrogen is the seventh element, and has seven protons (red) in its nucleus, along with seven neutrons (blue). Nitrogen has seven electrons, and each of its orbitals can hold a maximum of two. Orbitals are filled from the lowest energy...
Getty Images
Saturn and Titan. Unlike any other moon, Titan has a thick atmosphere of nitrogen, with trace amounts of methane and other hydrocarbons
Saturn and Titan. Unlike any other moon, Titan has a thick atmosphere of nitrogen, with trace amounts of methane and other hydrocarbons
Getty Images
Nitrogen atom.
Diagram of an atom of the element nitrogen, showing the central nucleus surrounded by its electron orbitals. Nitrogen is the seventh element, and has seven protons (red) in its nucleus, along with seven neutrons (blue). Nitrogen has...
Getty Images
MS PAN Lab technician taking samples out of liquid nitrogen at Cancer research Healthcare medicine Industry DNA sequencing Laboratory / Vancouver, BC, Canada
MS PAN Lab technician taking samples out of liquid nitrogen at Cancer research Healthcare medicine Industry DNA sequencing Laboratory / Vancouver, BC, Canada
Getty Images
close up : draw tube from liquid nitrogen tank
close up : draw tube from liquid nitrogen tank