The publication of this model in his book De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres) just before his death in 1543 was a major event in the history of science, triggering the Copernican Revolution and making an important contribution to the Scientific Revolution.
World market prices for dairy products The average world market price of butter in 1981-2006 was US$1 580/ton, fluctuating between US$1 000/ton and US$2 000/ton. It shot up to US$2 886/ton in 2007 and, in the first six months of 2008, increased further to US$4 021/ton.
The weighted average price for organic half gallon milk is $3.72. For a conventional half gallon of milk, the average. price is $2.33, an organic price premium of $1.39. Once again, there were more total ads for organic milk than. conventional milk. Organic milk advertisement numbers decreased 7%, and ad numbers for conventional milk. decreased 12%.