The sap flow from the maple trees is governed by alternate freezing and thawing patterns in the late winter.
With a growing population and global warming raising temperatures, water resources are being impacted.
After the worst one-year drought on record, Texas has turned very wet, raising short-term flood concerns
Ethiopian farmers test out new drought-resistant chickpea crop in hopes of boosting production.
The rising temperatures in West Africa are expected to damage a major portion of cocoa supplies, raising chocolate prices.
If reservoir levels don't rise in the coming months, water managers will be forced to withhold water from agricultural users, which will mean severe cuts to Texas rice production this year.
What experts are saying about a new proposal to help solve global warming by reducing methane and soot emissions.
The newly discovered virus Hendra has roared fully into life with more outbreaks in 2011 than in the 16 previous years.