Dear EarthTalk: Is it true that gas furnaces cost less to run and burn cleaner than their oil counterparts? If I make the switch, how long should I expect it to take for me to pay back my initial investment? And are there any greener options I should consider? — Veronica Austin, Boston, MA


Dear EarthTalk: I know that large fish contain a lot of mercury, but where does it come from? And what are we doing to prevent this contamination? — Alison Bronner, Atlanta, GA

Debate On Internet Censorship Bill To Resume Dec. 21

UPDATED: The House Judiciary Committee will resume markup of the Stop Online Piracy Act (SOPA) on Wednesday, Dec. 21, at 9 a.m. WASHINGTON, D.C. – The House Judiciary Committee has postponed further debate on a controversial bill that would give the government the power to block access to entire websites accused of hosting content that infringes on copyrights. The committee is expected to resume the markup proceedings after Congress’ holiday recess.