@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 1/9》 I agree, Jonathan. Additionally, Michael Simpson @skepticalraptor's denial of the abortion / breast cancer ("ABC") link is factually incorrect.
I explained it to him on his site, but he's not responded:
skepticalraptor.com/skepticalrapto…
disq.us/p/2ukouaf
sealevel.info/skepticalrapto… Image
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 2/9》 There's an undisputed, strong association between breast cancer risk and a woman's age at first full-term pregnancy, and an inverse correlation between breast cancer risk and number of children she's borne. Here's a reference:
cancer.gov/about-cancer/c…
sealevel.info/cancer_dot_gov… Image
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 3/9》 If a woman has an abortion before her first full-term pregnancy, that necessarily increases her age at first full term pregnancy, which increases her risk of breast cancer later in life.
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 4/9》 Additionally, regardless of when her abortions occur, each abortion she has reduces the total number of children borne to her. That also increases her risk of breast cancer.
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 5/9》 Biased researchers seeking to debunk the link between abortion & breast cancer typically control for those factors, to hide the link. When abortion is the direct cause of those factors, controlling for them is obviously a methodological error, but they do it anyhow.
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 6/9》 Michael @skepticalraptor, did you realize that's what the studies were referring to, with their innocuous-sounding but misleading caveat, "After adjusting for known breast cancer risk factors" (which you quoted)?
skepticalraptor.com/skepticalrapto…
sealevel.info/skepticalrapto… Image
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis 7/9》 There've also been studies which have found a greater association between abortion and breast cancer risk than can be accounted for by the aforementioned factors. Those results are disputed, and I don't know enough about them to assess them. @DrBrind
nationalreview.com/2015/03/aborti…
@JonathanSarfat1 @TigerlillySusan @skepticalraptor @han_francis @DrBrind 8/9》 Abortion is also associated with other risks, including a dramatically increased risk of suicidal ideation and suicide. Suicide risk is reported to be approximately six times higher after abortion than after childbirth. Here's an article about it:
irishtimes.com/opinion/risk-o…

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More from @ncdave4life

Jun 7
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May 26
@HenrikHindby @JimFish56837379 @EcoSenseNow @DGWilkinson 1/4」This might be the study:
nber.org/papers/w29320
EXCERPT:
"We consistently find a large CO2 fertilization effect: a 1 ppm increase in CO2 equates to a 0.4%, 0.6%, 1% yield increase for corn, soybeans, and wheat, respectively.
…CO2 was the dominant driver of yield growth…"
@HenrikHindby @JimFish56837379 @EcoSenseNow @DGWilkinson 2/4」Fossil CO2 (from fossil fuels & cement) is certainly a major contributor to the huge improvement in crop yields. I'm not convinced that it accounts for a majority of the improvement, but might well have been the largest single contributor.
@HenrikHindby @JimFish56837379 @EcoSenseNow @DGWilkinson 3/4」What's more, most nitrogen fertilizer is made using fossil fuel (mostly natural gas), via the Haber-Bosch process.

Nitrogen fertilizer made using fossil fuels, plus CO2 fertilization, probably account for a majority of the improvement in crop yields.
Read 5 tweets
May 26
@SchneidGabriel @cptndemocracy64 @davidcharlesuk1 @EcoSenseNow 1/7」That's simply untrue, Gabriel. Ice core records indicate that reversals in CO2 concentration trend followed reversals in temperature trend by at least several hundred years over ONE particular period of time. But that's no longer the case, and it hasn't been for >100 years.
@SchneidGabriel @cptndemocracy64 @davidcharlesuk1 @EcoSenseNow 2/7」Earth only got ≈90 ppmv of CO2 level change over a complete glaciation/deglaciation cycle, accompanied by at least 5-6°C global temperature change.
In contrast, we've gotten a 140 ppmv CO2 increase since 1780, accompanied by a small fraction of that much temperature change.
@SchneidGabriel @cptndemocracy64 @davidcharlesuk1 @EcoSenseNow 3/7」I do not understand how anyone can think that adding something to the atmosphere does not increase then amount of it in the atmosphere. That's just silly.

1 ppmv CO2 = 7.8024 Gt CO2 = 2.12940 PgC

So adding 7.8 Gt CO2 to the air raises CO2 level by 1 ppmv.
Read 7 tweets
May 25
@Badumtish97 ⟦1/7⟧ "In less than a lifetime," eh?

Have you ever wondered why all the harms from climate change are promised for the distant future, but the benefits are measurable, right now?


sealevel.info/Africans_go_ba… Image
@Badumtish97 ⟦2/7⟧ It's because the benefits are real, and the harms are not.

Thousands of rigorous peer-reviewed studies have confirmed the benefits. (You'll find them mostly in the agronomy literature, not the heavily politicized "climate science" literature.)
sealevel.info/negative_socia…
@Badumtish97 ⟦3/7⟧ All major crops have been studied. They ALL benefit from more CO2.

The benefits of CO2 for crops are long-settled science. That's why commercial greenhouses use CO2 generators to drastically raise daytime CO2 levels in greenhouses.
co2science.org/data/plant_gro… Image
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