A lot to unpack here,
Glacial periods happen because of obliquity, precession, etc. These are natural variations of earth going around the sun.
To answer the question of what can be done, my quickest solution is fusion energy. It diminishes CO emissions, while also combating the crisis with access to potable water. Developing nations will use fossil fuels to get theirs, and we can’t blame them, we did the same thing. I hope fusion energy becomes practical around 2030. That’s above my pay grade, and Ive been told that is wishful thinking, but that is my solution.
I don’t mean to sound defeatist, but when you factor in population growth, and deforestation, we are in damage control.
Sadly, I'm almost resigned to the same conclusion.
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The question becomes, is any of this mess reversible?
Since 1951, the earliest year on this chart with full stats, the world population (and # of people per square km) has more than tripled from 2.5 billion to over 8 billion (2011-2023). That happened within the last 73 years.....a short blip of time in the history of humanity. To put this into perspective, it took 123 years to go from 1billion to 2 billion (1804-1927) and 12yrs to go from 7 billion to 8 billion. Though the growth has slowed over the past few years, we're still adding 70 million more people per year....all of whom need food, water, natural resources and living space.
(It was impossible to get the columns to line up, the last 3 are: Yearly Change, Net Change, Density (P/Km²))
World Population by Year
Year Population
2023 8,045,311,447 0.88 % 70,206,291 54
2022 7,975,105,156 0.83 % 65,810,005 54
2021 7,909,295,151 0.87 % 68,342,271 53
2020 7,840,952,880 0.98 % 76,001,848 53
2019 7,764,951,032 1.06 % 81,161,204 52
2018 7,683,789,828 1.10 % 83,967,424 52
2017 7,599,822,404 1.15 % 86,348,166 51
2016 7,513,474,238 1.17 % 86,876,701 50
2015 7,426,597,537 1.19 % 87,584,118 50
2014 7,339,013,419 1.22 % 88,420,049 49
2013 7,250,593,370 1.24 % 88,895,449 49
2012 7,161,697,921 1.25 % 88,572,496 48
2011 7,073,125,425 1.25 % 87,522,320 47
2010 6,985,603,105 1.27 % 87,297,197 47
2009 6,898,305,908 1.27 % 86,708,636 46
2008 6,811,597,272 1.27 % 85,648,728 46
2007 6,725,948,544 1.27 % 84,532,326 45
2006 6,641,416,218 1.27 % 83,240,099 45
2005 6,558,176,119 1.27 % 82,424,641 44
2004 6,475,751,478 1.28 % 81,853,113 43
2003 6,393,898,365 1.29 % 81,491,005 43
2002 6,312,407,360 1.31 % 81,660,378 42
2001 6,230,746,982 1.33 % 81,848,007 42
2000 6,148,898,975 1.34 % 81,140,517 41
1999 6,067,758,458 1.34 % 80,445,978 41
1998 5,987,312,480 1.37 % 80,831,219 40
1997 5,906,481,261 1.40 % 81,335,963 40
1996 5,825,145,298 1.43 % 81,925,844 39
1995 5,743,219,454 1.46 % 82,491,461 39
1994 5,660,727,993 1.49 % 83,294,470 38
1993 5,577,433,523 1.54 % 84,747,430 37
1992 5,492,686,093 1.60 % 86,440,226 37
1991 5,406,245,867 1.69 % 90,070,005 36
1990 5,316,175,862 1.77 % 92,471,554 36
1989 5,223,704,308 1.78 % 91,410,334 35
1988 5,132,293,974 1.81 % 91,309,479 34
1987 5,040,984,495 1.84 % 90,921,156 34
1986 4,950,063,339 1.82 % 88,332,726 33
1985 4,861,730,613 1.80 % 85,894,539 33
1984 4,775,836,074 1.79 % 83,951,836 32
1983 4,691,884,238 1.82 % 83,899,367 32
1982 4,607,984,871 1.84 % 83,357,213 31
1981 4,524,627,658 1.81 % 80,619,952 30
1980 4,444,007,706 1.80 % 78,424,835 30
1979 4,365,582,871 1.77 % 75,925,163 29
1978 4,289,657,708 1.75 % 73,885,218 29
1977 4,215,772,490 1.77 % 73,266,608 28
1976 4,142,505,882 1.80 % 73,068,651 28
1975 4,069,437,231 1.85 % 73,920,154 27
1974 3,995,517,077 1.92 % 75,265,573 27
1973 3,920,251,504 1.96 % 75,450,619 26
1972 3,844,800,885 1.98 % 74,637,793 26
1971 3,770,163,092 2.02 % 74,772,756 25
1970 3,695,390,336 2.06 % 74,735,061 25
1969 3,620,655,275 2.08 % 73,844,467 24
1968 3,546,810,808 2.05 % 71,362,642 24
1967 3,475,448,166 2.03 % 69,031,130 23
1966 3,406,417,036 2.08 % 69,305,053 23
1965 3,337,111,983 2.14 % 69,899,645 22
1964 3,267,212,338 2.24 % 71,433,091 22
1963 3,195,779,247 2.21 % 69,092,504 21
1962 3,126,686,743 1.90 % 58,316,134 21
1961 3,068,370,609 1.63 % 49,137,175 21
1960 3,019,233,434 1.65 % 48,941,246 20
1959 2,970,292,188 1.86 % 54,184,091 20
1958 2,916,108,097 2.04 % 58,241,240 20
1957 2,857,866,857 2.03 % 56,864,226 19
1956 2,801,002,631 2.00 % 54,930,490 19
1955 2,746,072,141 2.01 % 54,092,802 18
1954 2,691,979,339 1.96 % 51,700,542 18
1953 2,640,278,797 1.93 % 50,007,898 18
1952 2,590,270,899 1.85 % 47,140,519 17
1951 2,543,130,380 1.75 % 43,808,223 17
1927 2,000,000,000
1900 1,600,000,000
1850 1,200,000,000
1804 1,000,000,000