Political leadership required to make progress towards ambitious climate agreement says former UN Secretary General
US defense chief says investments in wind, solar and energy efficiency will boost military’s ability to operate around the world
Divestment campaign kicks off in US capital city as authorities debate moving retirement funds from fossil fuels
Toy maker Lego aims for 100% renewable energy generation by 2016 through WWF scheme
Simulation suggests that even halting greenhouse gas emissions could still leave the Earth’s average temperature rising
Thursday’s top five: Beijing launches carbon trading scheme, Poland starts fracking, Jordan builds first major wind farm
Christiana Figueres, Michael Zammit Cutajar and Yvo de Boer on challenges facing international negotiations up to 2015 Paris summit
Billed as the ‘finance summit’, Warsaw delivered little and promised less, leaving many questions unanswered
A Staten Island park will host a solar energy system which will generate enough energy to power 2,000 homes
Carbon Tracker says KXL approval would not benefit investors by as much as is widely assumed
Wednesday’s top five: fossil fuels banned, EU car emissions limited, Solomon Islands face economic crisis, Kiribati resident refused climate refugee status
Met Office summary for UN climate summit reveals recent pause in temperature rise not unusual, with more likely in future
Over 190 companies started trading carbon credits in Shanghai today, with another scheme in Beijing set to launch next week
As excess winter deaths increase, frustration rises at threatened government rollback of energy efficiency policies
Hurricane Sandy and drought that hit 70% of the country were estimated to have cost the US more than $100bn in financial losses
Frustrations of negotiators evident in leaked transcripts of closed door talks during Warsaw climate conference
Clean energy investment in the three countries topped US$11.3 billion in 2012 says Bloomberg
Tuesday’s top five: Shanghai ETS opens, Brazil pushes new solar, €2.2bn green bonds issued in UK, Kiribati residents feel climate pinch
Designer Agility Global will accompany 16 other British cleantech companies to show off their wares in the US
Full transcript of speech by former UK climate envoy John Ashton on why climate change is like a Pink Floyd album