Physics-Minded Crows Bring Aesop’s Fable to Life

crow and archimedesEureka! Like Archimedes in his bath, crows know how to displace water, showing that Aesop’s fable The Crow and the Pitcher isn’t purely fictional.

To see if New Caledonian crows could handle some of the basic principles of volume displacement, Sarah Jelbert at the University of Auckland in New Zealand and her colleagues placed scraps of meat just out of a crow’s reach, floating in a series of tubes that were part-filled with water. Objects potentially useful for bringing up the water level, like stones or heavy rubber erasers, were left nearby.

Cap and Trade In Ontario

cap and trade in ontario

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Fighting climate change while encouraging innovation and productivity is part of the government’s plan to grow the economy and create jobs. An important part of this plan is creating a low-carbon economy through a cap and trade system, which will limit pollution, reward innovative companies and create more opportunities for investment in Ontario.

Source: Government of Ontario

School Science Safety — High Hazard Chemicals

School science laboratories contain many containers of chemicals. Which chemicals pose the greatest risk to the health and safety of science teachers and students? This video discusses high-risk chemicals, like compounds that are potentially explosive, react in contact with water or even the air, or are highly toxic via inhalation or absorption through the skin.