Northwest passage open across Arctic Ocean for the first time; Calderón says border fence will harm both Mexico, US; Olmert vows to work for peace...

9 October :: The fabled 'Northwest Passage' through northern Canada was ice-free this summer for the first time in recorded history, and is being explored by a Canadian Coast Guard ice-breaker, whose journey will be far easier than any before through the glacial route; climate models had not foreseen such intense Arctic-wide ice-melt until one or two decades further into the future; Canada, Denmark, the US and Russia, may now compete for the right to use or control parts of what may become a seasonal shipping route as the planet keeps warming... Sen. Barack Obama (D-IL) proposes national cap on greenhouse gas emissions, auction system that would force polluters to pay, saying "No business will be allowed to emit any greenhouse gases for free"; plan would bring US emissions to 1990 levels by 2020, to 80% below that by 2050... Mexico pres. Felipe Calderón has criticized US pres. Bush for building security barrier between two countries, saying nations should "build bridges, not fences", says he believes economic expansion in Mexico is best way to solve problem of mass economically-driven migration to the north... Israel PM Ehud Olmert has told MPs he will devote the coming year to security a lasting peace with Palestinians; while conservative ministers berated him, Olmert said he believed the Abbas gov't was devoted to peace and its commitment to that end should not be squandered; senior Palestinian negotiator Saeb Erekat welcomed the remarks saying it showed Olmert understood that "time is of the essence"... CA group reported to be collecting signatures to put former VP Al Gore's name on ballot for 5 February primary elections; 2000 Democrat candidate for presidency has repeatedly said running is not in his plans, but has never fully ruled out running... Burmese junta names retired general as liaison to Nobel-laureate opposition leader Aung San Suu Kyi, under house arrest; move is direct response to suggestion by UN envoy Ibrahim Gambari, opposition worries it is "cosmetic" step meant to deflect attention from violent crackdown; Singapore arrested 6 demonstrators who criticized Burma's military gov't, as it does not allow gathering of more than 5 people in public without permission...