Rick Nevin provides updated graphs, one of the four posted here, in his post Update: Juvenile crime still falling fast in 2021 (4/2/2023). USA arrest rates by age have only been updated through 2020, but juvenile arrest data reported by 10 states (FL, TX, CA, NY, VA, TN, WA, SC, GA, NC) show the trend toward zero juvenile crime continued …
Read More »What is the 2023 hydropower outlook?
The eia article Mixed water supply condition across western states affects 2023 hydropower outlook by Lindsay Aramayo (5/10/2023) has this to say Record-breaking rain and snow in parts of the western United States contribute to our forecast 72% rise in hydropower generation in California this year compared with last year, according to …
Read More »What’s new at sustainabilitymath?
The links to resources page has been revamped. For those of you looking for data I think I have made it easier. There is now a box with the type of data in bold and a link. I’ve also added a spatial data box for those looking for data with …
Read More »What’s new as sustainabilitymath?
The calculus projects page has been updated with the most recent data available. Most of the trends didn’t change but solar did and hence there were some changes in the countries used in the graphs. There is also an updated Excel curve fitting directions for those using Excel (consider using …
Read More »When are simple-cycle natural gas turbines used?
The eia article U.S. simple-cycle natural gas turbines operate at record highs in summer 2022 by Mark Morey (3/1/2023) reports: The average monthly capacity factor for simple-cycle, natural gas turbine (SCGT) power plants in the United States has grown annually since 2020. Average capacity factors surpassed 20% for two consecutive …
Read More »How much time do teens spend with friends?
The graph here come from the post The new CDC report shows that Covid added little to teen mental health trends by Jon Haidt (2/16/2023). His thoughts on this graph: Here you can see a clear covid effect from 2019 to 2020, for all of the age groups who are …
Read More »Has maternal mortality decreased?
The World Bank article Progress in reducing maternal mortality has stagnated and we are not on track to achieve the SDG target: new UN report by Emi Suzuki, Charles Kouame, and Samuel Mills (2/22/2023) provides an update on maternal mortality. The key summary: Globally, the MMR dropped by 34% between …
Read More »What is the status of the Great Salt Lake?
You may be seeing articles about the Great Salt Lake in the news and how it drying up is an environmental problem. NASA Earth Observatory had a great article last summer, The Great Shrinking Lake, with maps and data about the loss of water. Though water levels in the Great …
Read More »How much crude oil will the U.S. produce?
According to the eia article U.S. crude oil production will increase to new records in 2023 and 2024 by Matthew French, Alexander DeKeyserling, Naser Ameen (1/25/2023): …we forecast that crude oil production in the United States will average 12.4 million barrels per day (b/d) in 2023 and 12.8 million b/d …
Read More »What is the world fertility rate?
The graph here is from the World Bank post Fertility rate, total (births per woman). In 2020 the rate was 2.3, barely above the stable rate of 2.1. The page includes rates for countries with the lowest Korea (Rep) at 0.8, the U.S at 1.6, at the highest Niger at …
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