Credit Annie Ropeik / NHPR A health-focused commission on reducing New Hampshire’s greenhouse gas emissions has finished its work with one recommendation: for the state Legislature to do more formal study of the issue next year. The Ad Hoc Emissions Commission’s final report, released Thursday, supports the re-introduction of a bill that led the group to form in the first place, after it was tabled during the abbreviated 2020 legislative session. The bill, co-sponsored by Republican Sen. Jeb Bradley and Democratic Sen. Tom Sherman, would have lawmakers study “science-based emissions reduction goals for the state.” The ad-hoc group has talked about that for several months, hearing from public health and climate change experts on the financial and health costs of rising emissions.