Evacuations ordered, homes damaged in Texas after storms spawn tornadoes and send rivers surging

2ºLyn Kate homo sapiens have been around for about 300,000-333,000 years.

Milankovitch (orbital) cycles, changes in greenhouse gas concentrations due to volcanic activity and influences of the biosphere, and changes in stratospheric volcanic SO2 have been the drivers of changes throughout the Pleistocene and Holocene. Humans have a greater influence than all of the above, as a direct result of our fossil fuel combustion, industry emissions, and agricultural 'production' causing about a 50% increase in atmospheric CO2 from pre-industrial-present. Without that, Earth wouldn't be warming right now.

"Global surface temperatures are more likely than not unprecedented in the past 125,000 years
The latest decade was warmer than any multi-century period after the Last Interglacial, around 125,000 years ago
Over the last 50 years, global temperature
has increased at a rate unprecedented in at least the last 2000 years"
Pg 29 of this PDF on WG 1's Technical Summary:
https://www.ipcc.ch/repor..._AR6_WGI_TS.pdf

3ºAnother list to expand by tapping/clicking 'see more':
Climate-exodus expected in the Middle East and North Africa:
https://www.sciencedaily....60502131421.htm
Exodus: Climate and the movement of the people:
https://magazine.wsu.edu/...-of-the-people/
Climate Exodus: The Migration Catastrophe of Bangladesh:
https://ieeexplore.ieee.org/document/9231036
America’s Great Climate Exodus Is Starting in the Florida Keys:
https://www.bloomberg.com...he-florida-keys
Florida's Great Displacement Has Already Begun:
https://www.businessinsid...es-flood-2023-2
The Inevitable Climate Exodus from the American South:
https://jwbarlament.mediu...th-da4c7a3b1ff5
Rising seas threaten ‘mass exodus on a biblical scale’, UN chief warns:
https://www.theguardian.c...-un-chief-warns
Climate Change-induced Sea-Level Rise Direct Threat to Millions around World, Secretary-General Tells Security Council
Speakers Warn of Vanishing Coastlines, Endangered Nations, Forced Migration, Competition over Natural Resources:
https://press.un.org/en/2023/sc15199.doc.htm
World has lost battle to stop glaciers melting and sea level rising, UN meteorological chief says:
https://news.sky.com/stor...f-says-12898899
Global warming: Thousands flee Pacific islands on front line of climate change:
https://ehs.unu.edu/media...ate-change.html
What Happens When Your Country Drowns? Meet the people of Tuvalu, the world’s first climate refugees.:
https://www.motherjones.c...imate-refugees/
Climate Crisis Fuels Exodus to Mexico, Both Waystation and Destination:
https://reliefweb.int/rep...and-destination
How climate change is driving emigration from Central America:
https://theconversation.c...-america-121525
The People of the Isle de Jean Charles Are Louisiana’s First Climate Refugees—but They Won’t Be the Last:
https://www.nrdc.org/stor...ey-wont-be-last
Isle De Jean Charles climate refugee relocations begin:
https://www.fox8live.com/...ocations-begin/
Increasing heat is already a factor in human migration – new study:
https://theconversation.c...ew-study-206358
"According to figures cited in the report, 3.6 billion people had inadequate access to water at least one month per year in 2018. By 2050, this is expected to rise to more than five billion."
https://wmo.int/news/medi...is-report-warns
Global Climate in 2015-2019: Climate change accelerates:
https://public.wmo.int/en...nge-accelerates
Climate change and impacts accelerate:
https://public.wmo.int/en...acts-accelerate
WMO annual report highlights continuous advance of climate change:
https://public.wmo.int/en...-climate-change

4ºMark S Burke if you insist, though..
""In studying one of the most dramatic episodes of global change since the dinosaurs, the researchers show that we are currently in uncharted territory in the rate carbon is being released into the atmosphere and oceans," said Candace Major, program director in the National Science Foundation (NSF) Division of Ocean Sciences, which funded the research.

The findings suggest that humans are responsible for releasing carbon about 10 times faster than during any time in the past 66 million years.

The research team developed a new approach and was able to determine the duration of the onset of an important past climate event, the Paleocene-Eocene Thermal Maximum (PETM), 56 million years ago.

"As far as we know, the PETM had the largest carbon release during the past 66 million years," Zeebe said.

Zeebe and co-authors Andy Ridgwell, of the University of Bristol and University of California, and James Zachos, of the University of California, combined analyses of chemical properties of sediment cores dating back to the PETM with numerical simulations of Earth's climate and carbon cycle.

The new method allowed them to extract rates of change from a sediment record.

Applied to the PETM, they calculated how fast the carbon was released, how fast Earth's surface warmed, and what constrained the time scale of the onset, which was across 4,000 years.

The rate of carbon release during the PETM was much smaller than the current input of carbon to the atmosphere from human activities.

Carbon release rates from human sources reached a record high in 2014 of about 37 billion metric tons of CO2. The researchers estimated that the maximum sustained carbon release rate during the PETM was less than four billion metric tons of CO2 per year -- about one-tenth the current rate.

"Because our carbon release rate is unprecedented over such a long time period in Earth's history, it also means that we have effectively entered a 'no-analogue' state," said Zeebe. "This represents a big challenge for projecting future climate change because we have no good comparison from the past."

Whereas large climate transitions in the past may have been relatively smooth, there is no guarantee for the future, the scientists said. The climate system is non-linear, which means that its response to inputs, such as CO2 emissions, is a complex process involving multiple components.

"If you kick a system very fast, it usually responds differently than if you nudge it slowly but steadily," Zeebe said. "It is likely that future disruptions of ecosystems will exceed the relatively limited extinctions observed at the PETM.""
https://www.nsf.gov/news/news_summ.jsp?cntn_id=137908 "The Paleocene-Eocene Thermal Maximum (PETM) at 56 million years before present is arguably the best ancient analog of modern climate change. The PETM involved more than 5oC of warming in 15-20 thousand years (actually a little slower than rates of warming over the last 50 years), fueled by the input of more than 2000 gigatons (a gigaton is a billion tons!) of carbon into the atmosphere."
https://www.e-education.psu.edu/earth103/node/639

5ºMark S Burke scientists have already asked and answered. Brainiacs tend to do that.
"Significance
We show that for thousands of years, humans have concentrated in a surprisingly narrow subset of Earth’s available climates, characterized by mean annual temperatures around ∼13 °C. This distribution likely reflects a human temperature niche related to fundamental constraints. We demonstrate that depending on scenarios of population growth and warming, over the coming 50 y, 1 to 3 billion people are projected to be left outside the climate conditions that have served humanity well over the past 6,000 y. Absent climate mitigation or migration, a substantial part of humanity will be exposed to mean annual temperatures warmer than nearly anywhere today.
Abstract
All species have an environmental niche, and despite technological advances, humans are unlikely to be an exception. Here, we demonstrate that for millennia, human populations have resided in the same narrow part of the climatic envelope available on the globe, characterized by a major mode around ∼11 °C to 15 °C mean annual temperature (MAT). Supporting the fundamental nature of this temperature niche, current production of crops and livestock is largely limited to the same conditions, and the same optimum has been found for agricultural and nonagricultural economic output of countries through analyses of year-to-year variation. We show that in a business-as-usual climate change scenario, the geographical position of this temperature niche is projected to shift more over the coming 50 y than it has moved since 6000 BP. Populations will not simply track the shifting climate, as adaptation in situ may address some of the challenges, and many other factors affect decisions to migrate. Nevertheless, in the absence of migration, one third of the global population is projected to experience a MAT >29 °C currently found in only 0.8% of the Earth’s land surface, mostly concentrated in the Sahara. As the potentially most affected regions are among the poorest in the world, where adaptive capacity is low, enhancing human development in those areas should be a priority alongside climate mitigation."
https://www.pnas.org/doi/10.1073/pnas.1910114117