Assertion: methane | /r/AtLocation | eye
Facets:
value: over the last 30 years
type: TEMPORAL
value: in some researchers
type: OTHER
Source sentences:
text: Over the last 30 years, methane has gone from being a gas of no importance, to — in some researchers eyes, at least — possibly the most important greenhouse gas both for understanding climate change and as a cost-effective target for future emission reductions.