Washington (AFP) – Could the planet finally be on track to limiting climate change? After US President Joe Biden ramped up ambitions with a climate summit, experts are cautiously saying yes — although a difficult path lies ahead. At a 40-leader summit he convened just months into his presidency, Biden doubled US targets to slash greenhouse gas emissions responsible for climate change by 2030, with Japan and Canada also raising commitments and the European Union and Britain locking in forceful targets earlier in the week. “Together we’ve made great progress,” Biden told the closing day of the …