nd tablet. FREE new subscriber benefits: What We're Reading, subscriber-only emails with insights from our joumalists; enhanced archive access with TimesMachine; and our new mobile apps, NYT Now, for quick access to top stories, and NYT Opinion, featuring our influential columnists and curated commentary fr

d tablet. FREE new subscriber benefits: What We're Reading, subscriber-only emails with insights from our journalists; enhanced archive access with TimesMachine; and our new mobile apps, NYT Now, for quick access to top stories, and NYT Opinion, featuring our influential columnists and curated commentary fr

tablet. • FREE new subscriber benefits: What We're Reading, subscriber-only emails with insights from our joumalists; enhanced archive access with TimesMachine; and our new mobile apps, NYT Now, for quick access to top stories, and NYT Opinion, featuring our influential columnists and curated commentary fr

tablet. • FREE new subscriber benefits: What We're Reading, subscriber-only emails with insights from our journalists; enhanced archive access with TimesMachine; and our new mobile apps, NYT Now, for quick access to top stories, and NYT Opinion, featuring our influential columnists and curated commentary fr

d tablet. FREE new subscriber benefits: What We're Reading, subscriber-only emails with insights from our journalists; enhanced archive access with TimesMachine; and our new mobile apps, NYT Now, for quick access to top stories, and NYT Opinion, featuring our influential columnists and curated commentary fr

below captures an early chapter in the ongoing story: the Senate's approval of a Clean Air Act measure, from April 4,199o. You can view it here on TimesMachine, free to Times subscribers. VISIT TIMESMACHINE Sign Up for Emails About Climate Change Coverage EFTA00681508 Sign Up for I Our Climate Newslet

highlighting the best web stories curated by Times journalists. <http://f.e.newyorktimesinfo.com/i/18/2094298569/20131114_SPACER_25x2=.gif> &b=ll; TimesMachine — digital replicas of every print issue of The Times published from 1851-1980. <http://f.e.newyorktimesinfo.com/i/18/2094298569/20131114_SPACER_25x