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Chemicals in sentence

389 examples of Chemicals in a sentence

So if you go back about two and a half billion years, the Earth was this big, sterile hunk of rock with a lot of chemicals floating around on it.
And if you look at the way that the chemicals got organized, we begin to get a pretty good idea of how they do it.
And I think that there's theories that are beginning to understand about how it started with RNA, but I'm going to tell a sort of simple story of it, which is that, at that time, there were little drops of oil floating around with all kinds of different recipes of chemicals in them.
And some of those drops of oil had a particular combination of chemicals in them which caused them to incorporate chemicals from the outside and grow the drops of oil.
But now those drops of oil weren't really alive, as we say it now, because every one of them was a little random recipe of chemicals.
And every time it divided, they got sort of unequal division of the chemicals within them.
In fact, the drops that were different in a way that caused them to be better at incorporating chemicals around them, grew more and incorporated more chemicals and divided more.
One is that you and I all have between 30 to 50,000 chemicals in our bodies that our grandparents didn't have.
And many of these chemicals are now linked to the skyrocketing incidents of chronic childhood disease that we're seeing across industrialized nations.
And so I find it interesting that instead of treating this disease by preventing exposure to the chemicals that promote it, we simply respond by putting more chemicals into the environment.
PJC: With many plastic baby bottles now proven to leak the chemical bisphenol A, it really shows how sometimes it is only a parent's awareness that stands between chemicals and our children.
But it turns out that this ancient structure that separates us from other animals, the placenta, cannot evolve or adapt fast enough because of the rate that we're generating new chemicals that it's never seen before.
And given the life of many of these chemicals, generations, years, dozens of years, that means that we right now are affecting the health of our grandchildren's grandchildren by things that we're putting into the environment today.
And this is not just philosophical, it's already known, that chemicals like diethylstilbestrol and estrogen, PCBs, DDT cross the placenta and effectively determine the likelihood of developing breast cancer and obesity and diabetes already when the baby's in the womb.
We already know that chemicals like DDT and DES and atrazine can also pass over into milk, again, affecting our babies even after their born.
And so when you realize that chemicals can pass the placenta and go into your unborn child, it made me start to think, what would my fetus say to me?
And this was something that was really brought home to me a year ago when I found out I was pregnant and the first scan revealed that my baby had a birth defect associated with exposure to estrogenic chemicals in the womb and the second scan revealed no heartbeat.
They're exposed to chemicals like chloropicrin, which was originally used as a nerve gas.
And since we all smell different and produce chemicals on our skin that either attract or repel mosquitoes, some of us are just more attractive than others.
And during my PhD, I wanted to know exactly what chemicals from our skin African malaria mosquitoes use to track us down at night.
Now, solving this puzzle was not an easy thing, because we produce hundreds of different chemicals on the skin, but we undertook some remarkable experiments that managed us to resolve this puzzle very quickly indeed.
See, he owned a chromium-plating company, and they had to move heavy steel parts between tanks of chemicals.
It was a warning about his exposure to the toxic chemicals.
And as you're thinking about these two guys sequencing a human genome in 2000 and the Public Project sequencing the human genome in 2000, then you don't hear a lot, until you hear about an experiment last year in China, where they take skin cells from this mouse, put four chemicals on it, turn those skin cells into stem cells, let the stem cells grow and create a full copy of that mouse.
And what those four chemicals do is they take any cell and take it way back up the mountain so it can become any body part.
Or maybe it's chemicals.
And killing pathogens is a good thing if you're sick, but we should understand that when we pump chemicals and antibiotics into our world, that we're also killing the cloud of microbes that live in and on us.
No chemicals involved, just immune boosters.
So before I start, I would like to thank the makers of Lamotrigine, Sertraline, and Reboxetine, because without those few simple chemicals, I would not be vertical today.
If you get a little baby, and you abuse it verbally, its little brain sends out chemicals that are so destructive that the little part of its brain that can tell good from bad just doesn't grow, so you might have yourself a homegrown psychotic.
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