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The report analyzes 52 tide gauges from Maine to Texas, projecting that by 2045, many U.S. East and Gulf Coast communities will face a ten-fold increase in tidal flooding. It argues that such flooding will disrupt daily life, damage infrastructure, and necessitate a coordinated national response combining local adaptation—such as elevating roads and restoring wetlands—with global carbon emission reductions.

The report analyzes 59 tide gauges along the U.S. East and Gulf Coasts to project the impact of sea level rise on tidal flooding. Using an Intermediate-High scenario from the National Climate Assessment, the analysis finds that at least 40 locations will see a doubling of coastal flooding events by 2030, with the majority experiencing a 10-fold increase by 2045. Additionally, nearly half of the evaluated locations are projected to experience moderate coastal floods by 2045 from tides that currently only cause minor flooding.

The report analyzes the relationship between global wood product demand and tropical forest health, projecting consumption trends to 2060. It contrasts a 'business as usual' scenario of forest degradation with a sustainable future based on best-management practices in plantations. The authors advocate for a shift away from logging natural forests toward the use of fast-wood and multispecies plantations, supported by improved timber-tracking technologies and consumer pressure for certified sustainable products.

The Union of Concerned Scientists (UCS) proposes a 'Demonstrated Growth Approach' to replace the EPA's conservative renewable energy targets in the Clean Power Plan. The UCS argues that the EPA underestimates the cost-effectiveness and deployment rates of wind and solar power. By adopting the UCS methodology, the EPA could increase the 2030 share of renewable energy in U.S. electric sales from 12 percent to 23 percent, potentially increasing total power sector emissions reductions from 30 percent to approximately 40 percent below 2005 levels. The brief asserts that these higher targets are affordable, with minimal impact on consumer electricity prices and a potential 9 percent reduction in the national average price of natural gas for the electricity sector by 2030.

Rooftop solar costs in the US have nearly halved since 2007, with projections suggesting that by 2017, more than half of US states could have rooftop solar as cheap as grid electricity without state or local incentives. The number of US homes with rooftop solar grew from 30,000 in 2006 to nearly 400,000 by 2013, with future projections ranging from 1 million by 2020 (EIA) to nearly 4 million (DOE) depending on cost reductions.

California's climate strategies, centered on the Global Warming Solutions Act of 2006, are reducing oil use and emissions from the transportation sector, which accounts for nearly 40% of the state's global warming emissions. Key mechanisms include a cap-and-trade program, the Low Carbon Fuel Standard (LCFS), and stringent vehicle emissions standards. These policies have led to a 12% drop in oil consumption between 2006 and 2012 and are projected to save drivers money through increased fuel efficiency. Additionally, the state is investing carbon permit proceeds into disadvantaged communities and seeing a boom in clean technology investment and patent registrations.

The document finds that hydrogen fuel cell electric vehicles (FCEVs), such as the Hyundai Tucson Fuel Cell SUV, produce significantly lower lifecycle global warming emissions than their gasoline counterparts. While emissions depend on the hydrogen source—with natural gas being the current primary source—the use of renewable hydrogen can reduce emissions by over 50% compared to gasoline. California is highlighted as a leader in this transition through its Zero Emission Vehicle program and SB 1505, which mandates a minimum of 33% renewable hydrogen content at state-supported stations.

The Rocky Mountain forests are facing a "triple assault" of tree-killing insects, wildfires, and heat and drought, all driven by human-caused global warming. Bark beetle outbreaks killed trees on 46 million acres between 2000 and 2012, while large wildfires increased by 73 percent from 1984 to 2011. Iconic species like whitebark pines, aspens, and piñon pines are in catastrophic decline, with projections suggesting a 60 percent loss in suitable area for aspens by 2060 under medium-high emissions scenarios. The report argues that without reducing heat-trapping emissions and managing for resilience, these forests may be irrevocably degraded.

The forests of the Rocky Mountains are facing a 'triple assault' of tree-killing insects, wildfires, and heat and drought, all amplified by human-caused global warming. Bark beetle outbreaks killed trees on 46 million acres between 2000 and 2012, while large wildfires have increased in frequency and intensity. Iconic species like whitebark pines, quaking aspens, and piñon pines are in catastrophic decline. Projections suggest that if emissions continue unchecked, average regional temperatures could rise by 10°F by the end of the century, potentially replacing conifer forests with shrublands or grasslands. The report advocates for risk assessment, stakeholder engagement, managing for resilience, increasing agency capacity, addressing community vulnerability, and deep reductions in heat-trapping emissions.

The document details the historical transition from smallpox inoculation to vaccination in the United States, highlighting the roles of figures like Benjamin Franklin, George Washington, and James Madison. It uses Benjamin Franklin's personal tragedy—the death of his son due to a decision to avoid inoculation—as a cautionary tale against vaccine hesitancy. The text outlines the quantitative evidence that supported early inoculation efforts in Boston and the subsequent legislative and military actions that helped eradicate smallpox in the U.S. by 1949.

The report details the expansion of solar energy in the U.S., focusing on rooftop photovoltaic (PV) systems, large-scale PV, and concentrating solar power (CSP). It highlights significant cost reductions, the role of state and federal incentives, and the environmental benefits of transitioning from fossil fuels to solar, while addressing grid integration challenges and land-use impacts.

The document highlights that approximately 150 million people in the United States live in areas failing to meet federal air quality standards, with passenger and heavy-duty vehicles serving as major sources of pollutants like nitrogen oxides and particulate matter. It links these emissions to severe health outcomes, including respiratory ailments, heart disease, and up to 20,000 premature deaths annually from PM2.5. The text argues that while clean technologies and emission standards have significantly reduced pollution since 1970, current administrative rollbacks of policies like the Clean Air Act threaten these public health gains.

The Union of Concerned Scientists (UCS) identifies a significant opportunity for the United States to utilize agricultural residues and manure to reduce oil and coal dependence. By 2030, the U.S. could tap 155 million tons of residues and nearly 60 million tons of manure, which could generate over 10 billion gallons of ethanol or 166 billion kilowatt-hours of electricity. The document emphasizes that sustainable use requires balancing energy needs with soil health, suggesting that no-till farming and cover crops can mitigate erosion. Geographically, a small number of states, led by Iowa, hold the majority of this potential, with specific opportunities identified in Arkansas, Texas, and California based on their dominant crops and livestock.

The report argues that rising temperatures and drier conditions in the American West, combined with a trend of building homes in wildfire-prone areas, have led to longer fire seasons and soaring suppression costs. It highlights a misalignment of incentives where federal taxpayers bear the brunt of firefighting costs while local zoning allows risky development. The document details the broad economic impacts of wildfires—extending far beyond direct suppression to include public health crises, infrastructure damage, and tourism losses—and recommends a shift toward resilience, stricter building codes, and carbon emission reductions.

The document argues that climate change is creating hotter, drier conditions in the American West, leading to more frequent and severe wildfires. This risk is compounded by increased residential and commercial development in fire-prone areas and federal policies that prioritize immediate fire suppression over proactive forest management. The report details the escalating economic costs of suppression and the broader impacts on infrastructure, public health, and water supplies, while recommending zoning reforms, fireproofing, and carbon emission reductions to build resilience.

The document argues that climate change is creating warmer, drier conditions in the western United States, leading to longer fire seasons and more frequent large wildfires. This environmental shift, combined with increased development in fire-prone areas and a federal management bias toward fire suppression over proactive risk reduction, has caused firefighting costs to exceed $1 billion annually since 2000. The report highlights significant secondary costs, including infrastructure damage, public health crises from smoke, and watershed rehabilitation. It recommends stricter zoning laws, carbon emission reductions, and a shift in funding toward long-term forest health and community resilience.

The document proposes a comprehensive approach to climate management in the Great Lakes Region consisting of reducing greenhouse gas emissions, eliminating direct human pressures on the environment to increase ecosystem resilience, and planning for inevitable future climate impacts due to the long-term persistence of atmospheric emissions.

The document outlines the use of HadCM3 and Parallel Climate Model (PCM) data, combined with IPCC 2000 emission scenarios and a century of historical records, to project climate changes in the Great Lakes region. The analysis indicates greater temperature increases, especially in summer, and general drying during summer and fall compared to previous assessments.

The document describes how rising air temperatures in the Great Lakes Region will lead to higher lake temperatures, reduced ice cover, and increased evaporation, resulting in lower lake levels. It further notes that these changes, combined with human stresses like water pollution and groundwater extraction, will cause ecological disruptions in lakes, streams, and wetlands, specifically affecting productivity, eutrophication, and fish populations.

The document describes how climate change and human pressures will affect the Great Lakes Region, specifically highlighting risks to human health, the regional economy, and the cultural sense of place.