RIO DE JANEIRO — Efficient lighting would save $110 billion a year worldwide, according to a UN-led study published at the Rio+20 summit on Thursday. Yearly savings in phasing out incandescent bulbs and making other simple changes would amount to around five percent of global electricity consumption, it said. It…
WASHINGTON — Former president George W. Bush scrapped plans to address a summit of young leaders and business executives this weekend because Wikileaks founder Julian Assange would also speak to the group, his office said Friday. “The former president has no desire to share a forum with a man who…