Credit Annie Ropeik / NHPR A bill that would require New Hampshire to reach net-zero greenhouse gas emissions by 2050 got a first hearing in a state legislative committee Friday, earning support from state officials and the public, but meeting with skepticism from some members of the Republican majority. The goal is the same as that used by states like Massachusetts and several countries, and it's required by the Paris Climate Accords, which the U.S rejoins this month. United Nations scientists say the target is necessary to avert catastrophic impacts from global warming. This bill, sponsored by House Democrats with a corresponding version in the Senate, would have New Hampshire make a statewide plan for cutting its emissions through new policy- and market-based approaches to heating, electricity and land use. It suggests strategies ranging from renewable energy procurement to transit-oriented development to enhanced forestry.