Male giraffes fight each other by 'necking'! They push their long necks against each other, bending and twisting them in order to win the fight by a show of strength. Many animals fight this way, including snakes, insects and crabs. Competing in this way allows animals to find out who's boss while protecting themselves from injury. The strongest wins and the loser just has to go away.
Untreated sewage gushes out of Canadian cities
Untreated sewage gushes out of Canadian cities According to a study released by the Sierra Legal
Defence Fund, a number of major Canadian cities discharge untreated
or minimally treated sewage into the environment. The release of
sewage into fish-bearing waters is illegal under the federal
Fisheries Act. The amount of this untreated sewage released by
major Canadian cities is more than one trillion litres per year.
The report states that, at present, only Calgary uses truly
effective sewage treatment.
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