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Key Errata and Updates

NUMBERS, p. xiv

Current: Thirty-six billion gigatons is the amount of carbon dioxide emitted in 2016.

Correction: Thirty-six billion tons is the amount of carbon dioxide emitted in 2016.

 

MULTISTRATA AGROFORESTRY, p. 46

Current: Thanks to the many layers of vegetation supporting sequestration in both soil and biomass, an acre of multistrata agroforestry can achieve rates of carbon sequestration that are comparable to those of afforestation and forest restoration—2.8 per acre per year, on average—with the added benefit of producing food.

Correction: Thanks to the many layers of vegetation supporting sequestration in both soil and biomass, an acre of multistrata agroforestry can achieve rates of carbon sequestration that are comparable to those of afforestation and forest restoration—2.8 tons per acre per year, on aver- age—with the added benefit of producing food.

 

REGENERATIVE AGRICULTURE, p. 55

Current: Farms are seeing soil carbon levels rise from a baseline of 1 to 2 percent up to 5 to 8 percent over ten or more years. Every percent of carbon in the soil represents 8.5 tons per acre.

Correction: Farms are seeing organic matter levels rise from a baseline of 1 to 2 percent up to 5 to 8 percent over ten or more years. Every percent of carbon in the soil represents 8.5 tons per acre.

 

TROPICAL STAPLE TREES, p. 66

Current: Two-thirds of cultivated land, about 2.5 billion acres, is devoted to annuals today. The remaining 1.2 billion acres are used for perennial staple crops.

Correction: Today, 89 percent of cultivated land, about 3 billion acres, is devoted to annuals. Of the remaining land in perennial crops, 116 million acres are used for perennial staple crops.

 

MANAGED GRAZING, p. 74

Current: Many who started at 1 percent carbon are now at 6 to 8 percent, or more.

Correction: Many who started at 1 percent organic matter are now at 6 to 8 percent, or more.

 

CONSERVATION AGRICULTURE, p. 61

Current: Conservation agriculture sequesters a relatively small amount of carbon dioxide—an average of half a ton per acre.

Correction: Conservation agriculture sequesters a relatively small amount of carbon—an average of half a ton per acre.

 

SMART THERMOSTATS, p. 98

Current: Originating in North America and migrating to Europe, smart thermostats occupy a mere 2 percent of the addressable market at present.

Correction: Originating in North America and migrating to Europe, smart thermostats occupy a fraction of the addressable market at present.

 

HIGH-SPEED RAIL, p. 139

Current: -$1.04 TRILLION NET COST

Correction: $1.04 TRILLION NET COST

NOTE: This correction also applies on p. 223 and p. 225.

 

REFRIGERANT MANAGEMENT, p. 165

Current: The Kigali accord ensures a step change is coming, and other practices focused on existing stocks could reduce methane emissions further.

Correction: The Kigali accord ensures a step change is coming, and other practices focused on existing stocks could reduce emissions further.

 

SOLID-STATE WAVE ENERGY, p. 187

Current: The kinetic energy of oceans, which surge with roughly 80,000 terawatts of power, is extraordinary. It is a staggering amount of energy—enough to power human needs five thousand times over.

Correction: The kinetic energy of oceans, which surge with roughly 80,000 terawatt hours of power, is extraordinary. It is a staggering amount of energy—enough to power human needs four times over.

(Ref. http://www.irena.org/DocumentDownloads/Publications/IRENA_Ocean_Energy_report_2014.pdf)

 

AN OPENING, p. 217

Current: And, more people in the U.S. as of 2016 are employed by the solar industry than by gas, coal, and oil combined. Restoration creates more jobs than despoliation.

Correction: In the electric power generation industry, more people in the U.S. as of 2016 are employed by the solar industry than by gas, coal, and oil combined. Restoration creates more jobs than despoliation.

 

SUMMARY OF SOLUTIONS BY OVERALL RANKING, p. 222-223

Current: Lifetime Savings

Correction: Net Savings

 

SUMMARY OF SOLUTIONS BY SECTOR, p. 224-225

Current: Lifetime Savings

Correction: Net Savings

 

DRAWDOWN FELLOWS, p. 226

Addition: Jai Kumar Gaurav, MSc is a research analyst with eight years of experience working in the field of climate change mitigation and adaptation. He has worked on Clean Development Mechanism and Gold Standard certified voluntary emission reduction projects. He is also working on developing a Nationally Appropriate Mitigation Action (NAMA) proposal in the waste sector.

 

DRAWDOWN ADVISORS, p. 230

Addition: Jonathan Foley spent over two decades leading interdisciplinary, university-based programs focused on solving global environmental issues before becoming the Executive Director of the California Academy of Sciences, where he has been able to incite interest and excitement in the sciences in children and adults alike. He has published over 130 scientific articles, many op-eds, and has won numerous awards and honors, including the Presidential Early Career Award for Scientists and Engineers (awarded by President Bill Clinton).

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