Sharks have wimpy bites for their size and can crunch through their prey only because they have very sharp teeth.
Many nations, particularly developing countries, are affected by the destructiveness of desertification which leads to famine and rural community displacement.
Winter solstice at Newgrange
Alberta, home to the biggest oil reserves outside the Middle East, will look to boost use of renewable fuels.
The Gwynt y Môr wind farm, one of the biggest projects in the world to use wind power, has been given the go ahead.
A country known for green landscapes is looking to revamp its floundering economy with a green car revolution.
Scientists at Harvard University and IBM are hoping to harness the power of a million idle computers to develop a new, cheaper form of solar power.
In what many are calling a disappointing decision, the international body responsible for managing the Atlantic and Mediterranean Bluefin Tuna fishery set the total allowable catch much higher than critics believe the already precarious fishery can bear.
Man-made noise in the world's seas and oceans is becoming an increasing threat to whales, dolphins and turtles.