Ottawa Citizen: We learn from Saturdays paper that carbon dioxide, the main greenhouse gas, is at its highest concentration in the atmosphere in three million years.
Over shouts of Were No. 1!, it might be opportune to mention an unexplored consequence of climate change: our houses are cracking up.
Ottawa is built, with some exceptions, on a vast stretch of what the experts call sensitive clay soil, usually referred locally as leda, the old basin of the Champlain Sea.
During a prolonged drought in...