The troubled U. S. -Canada relationship might be fixed by______.

The relationship between the U. S. and Canada should be as placid as Lake Ontario on a calm summer day. The border is undefended. Their peoples seem like cousins. Each is the other’s largest single trading partner. Yet there has been serious friction between the two neighbors in recent years — friction that might now be eased by the surprise election of a new Canadian Prime Minister.

Yemen’s water crisis has been in pipeline, as it were, for at least 40 years. Until the 1970s Yemenis irrigated their crops as they had always done, with seasonal rainwater captured in elaborate systems of mountain terraces. Increasing demand for food as the population expanded, however, led farmers to seek a more reliable source of irrigation — and they found one in groundwater, pumped up by tube wells from beneath their feet.