Applying known technologies and changing old practices could make a big difference in ensuring an adequate water supply for both agriculture and cities, one expert says.
A prison sentence for a Congolese warlord. A court ruling for a Chadian dictator to be tried for torture. Some 67 years after Nuremberg trials, international courts and tribunals are making their mark.
A tribute to war correspondent Marie Colvin, a few tips about Syria from Lawrence of Arabia, and one Indian woman's fight against sexual harassment top this week's list of stories worth reading.
Thousands of small biogas plants turn manure from farm animals into a useful resource.