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The document reports that Florida's affordable housing stock is the 5th most vulnerable in the United States to future coastal flooding. By 2050, 963 units (0.8% of the state's stock) are projected to face at least annual threats, representing a 774% increase from 2000. Specific high-risk areas include Miami Beach, Marathon, and Ft. Lauderdale, with Miami Beach ranked 11th nationwide for units at risk. The analysis notes that affordable housing is particularly vulnerable because it is often older, of poorer quality, and lacks resilience features like flood-proofing.

The document highlights that Florida's affordable housing inventory is the fifth most vulnerable in the United States to future coastal flooding. By 2050, 963 affordable housing units in the state are projected to face at least annual coastal flooding threats, representing a 774% increase from the year 2000. Miami Beach is identified as a high-risk area, ranking 11th nationally for the number of affordable housing units at risk, with 317 units expected to be at risk annually by 2050.

The document highlights that Louisiana's affordable housing stock is the 8th most vulnerable in the United States, with projected increases in units exposed to coastal flooding by 2050.

Louisiana's affordable housing supply is the eighth most vulnerable in the United States to coastal flooding. Currently, 214 units are exposed, a number projected to rise to 685 by 2050, representing a 220% increase compared to 2000. The document highlights that affordable housing is particularly susceptible due to its age, poor quality, and lack of resilience features. Specific cities like Slidell, Luling, and Franklin are expected to see significant increases in exposed units by 2050.

The document reports that Massachusetts has the 3rd most vulnerable affordable housing stock in the United States regarding future coastal flooding. By 2050, 4,818 units (2% of the state's stock) could be exposed to coastal flooding. Boston is identified as particularly at risk, with expected annual exposure increasing from 609 units currently to 3,042 units by 2050, a 400% increase. Other high-risk cities in the state include Quincy, Cambridge, and Revere, all of which rank among the top 20 cities nationwide for affordable housing units at risk.

The document highlights that Massachusetts has the third most vulnerable affordable housing supply in the United States regarding future coastal flooding. By 2050, 4,818 affordable housing units in the state (2% of its supply) could be exposed to coastal flooding. Boston is identified as the most affected city, with an expected 400% increase in exposed units by 2050, reaching 3,042 units. The report notes that affordable housing is particularly vulnerable because it is often older, of lower quality, and lacks resilience features like flood protection.

New Jersey's affordable housing stock is identified as the most vulnerable in the United States by number of dwellings at risk of future coastal flooding. By 2050, 6,825 units (3.7% of the state's stock) are projected to be at risk, representing a 316% increase from 2000. Five New Jersey cities—Atlantic City, Hoboken, Camden, Penns Grove, and Salem—rank among the top 20 cities nationwide for the most affordable housing units at risk by 2050.

New Jersey's affordable housing inventory is identified as the most vulnerable in the United States regarding the quantity of units at risk from future coastal flooding. By 2050, 6,825 units (3.7% of the state's affordable housing inventory) are projected to be at risk, representing a 316% increase from the year 2000. Five New Jersey cities—Atlantic City, Hoboken, Camden, Penns Grove, and Salem—rank among the top 20 cities nationwide for affordable housing units at risk in 2050. The report notes that affordable housing is particularly susceptible because it is often older, of lower quality, and lacks resilience features like flood protection or backflow prevention valves.

New York City is ranked first among U.S. cities for the most affordable housing at risk by 2050, with projected annual risk increasing by 248% to 4,774 units. New York State's affordable housing stock is the second most vulnerable in the nation, with 5,293 units projected to be at risk by 2050, representing a 236% increase from current levels.

The document highlights that New York City has the highest number of affordable housing units at risk of coastal flooding in the United States. By 2050, the number of units at risk in New York City is projected to increase by 248% to 4,774 units. New York State as a whole is the second most vulnerable state in the nation, with 5,293 units projected to be at risk by 2050, representing a 236% increase from current levels.

The document highlights that Virginia's affordable housing stock is the 4th most vulnerable in the United States to future coastal flooding. By 2050, 1,473 units in Virginia are projected to be at risk, representing a 273% increase from current levels. Norfolk and Portsmouth are specifically identified as high-risk cities, with Norfolk ranking 5th and Portsmouth 17th nationwide for the percentage of affordable housing supply exposed in 2050.

The document reports that Virginia's affordable housing supply is the fourth most vulnerable in the United States to future coastal flooding. By 2050, 1,473 affordable housing units in Virginia are projected to be at risk, representing a 273% increase from current levels. The cities of Norfolk and Portsmouth are highlighted as particularly vulnerable, with projected increases in exposed units of 523% and 610% respectively.

The report examines how sea level rise and coastal flooding threaten elderly populations in the U.S., particularly those in nursing homes and assisted living facilities. It highlights the dangers of evacuation for frail seniors, the impact of 'sunny day' flooding on access to healthcare, and the hidden financial risks to real estate equity for retirees on fixed incomes.

The document defines net zero as the balance between greenhouse gas emissions released and those removed from the atmosphere. It identifies the primary U.S. emitting sectors as transportation (28%), electricity (27%), and industry (22%), and outlines solutions including the electrification of transport and buildings, the expansion of wind and solar power, and the use of natural and technological carbon sinks. It highlights that while 12 U.S. states have net-zero mandates by 2050, massive adoption of electric vehicles and carbon removal technologies is necessary to meet Paris Agreement targets.

The document reports that while the total number of hurricanes is not increasing, the probability of storms reaching major hurricane status (Category 3-5) has risen significantly, particularly in the North Atlantic. It attributes this trend to rising sea surface temperatures and atmospheric warming, which also contribute to heavier rainfall, slower storm speeds, and deeper coastal flooding due to sea level rise.

The Arctic sea ice reached its 2020 minimum extent of 1.44 million square miles on September 15, marking the second lowest extent in the nearly 42-year satellite record. This loss is driven by factors including a Siberian heat wave and a reinforcing feedback loop where the darker ocean surface absorbs more heat, contributing to the Arctic warming twice as fast as the rest of the planet. The 14 lowest extents in the satellite era have all occurred within the last 14 years, with the record low set in 2012.

The document describes how the 'urban heat island' effect causes cities to be hotter than rural areas, noting that this heat is disproportionately felt in formerly 'redlined' neighborhoods. It highlights the role of tree canopies and green spaces in mitigating heat and suggests resources and methods for journalists to report on urban heat inequality.

The report describes the technical framework of WeatherPower v3.0, which uses a 0.05° grid of weather data (wind speed and solar irradiance) and installed capacity data to estimate electricity generation for 'Yesterday', 'Today', and 'Tomorrow'. It outlines the data sources for utility and residential solar and wind capacities, the mathematical power curves used to calculate generation, and the reporting metrics used to contextualize the results, such as CO2 emissions avoided and equivalent homes powered. The document also includes a validation study comparing its wind generation estimates against actual data from the Electric Reliability Council of Texas (ERCOT).

Marine heatwaves (MHWs) are prolonged extreme warm water events, defined as temperatures above the 90th percentile for at least five consecutive days. These events have increased since the early twentieth century, driven by a 2.3°F (1.3°C) rise in sea surface temperatures over the last 100 years. MHWs cause severe ecological damage, including coral bleaching, kelp forest collapses, and sea bird die-offs, and can disrupt industries through fishery closures. A notable example is "the Blob" in the Pacific Ocean (2013), which lasted 226 days and was 4.5°F (2.5°C) warmer than average.

Climate Central's analysis of 242 U.S. cities shows that 96% have experienced an increase in cooling degree days since the 1970s, with the most significant rises in the South and Southwest. This trend is driving a projected 59% increase in residential air conditioning consumption by 2050, which contributes to carbon emissions, the urban heat island effect, and the release of heat-trapping gases from improper disposal.