Now, scientists just need to convince the policymakers charged with helping prepare communities for hurricanes that the dangers are only increasing.
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EPA and other federal agencies are taking action. EPA is working to protect the health and welfare of Americans through common sense measures to reduce greenhouse gas pollution and to help communities prepare for climate change.
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Solar output also varies on shorter time scales, including the 11-year solar cycle  and longer-term modulations .  Solar intensity variations possibly as a result of the Wolf, Spörer and Maunder Minimum are considered to have been influential in triggering the Little Ice Age,  and some of the warming observed from 1900 to 1950. The cyclical nature of the Sun's energy output is not yet fully understood; it differs from the very slow change that is happening within the Sun as it ages and evolves. Research indicates that solar variability has had effects including the Maunder minimum from 1645 to 1715 . , part of the Little Ice Age from 1550 to 1850 . that was marked by relative cooling and greater glacier extent than the centuries before and afterward.   Some studies point toward solar radiation increases from cyclical sunspot activity affecting global warming, and climate may be influenced by the sum of all effects (solar variation, anthropogenic radiative forcings , etc.).