A heavy dose of hysteria along with copious scientific data means that, even at 90 minutes, it can feel unwieldy and quite overwhelming. Still, if you're able to handle the pace, it is in the end, a positive eye-opener.

Too scattershot to land any effective punches.

While it's a well-constructed doc, full of relevant information and geared toward those people who still might be fence-sitters on the subject, there's something missing... a sense of maddened outrage.

The 11th Hour ultimately blossoms into a 21st century PSA of sorts, buoyed by hope and optimism...