During a chemical reaction mass is neither lost nor gained. The sum mass of the material going into the reaction equals the sum of the mass of the products of the reaction.

But I felt something.

On the fifth rung, we develop conclusions based on our assumptions.

simulations of chemical reactions

How are his vital signs?

The chemicals, they don't react so good with leather.

By some biological or psychic mechanism

Now this quest started four billion years ago on planet Earth.

OneD Biological Sequence Viewer

Typical reaction.

There's many physiological processes that are influenced by the acidity of the ocean.

So this is the great paradigm.

Biologicals here.

Biosigns on the shuttle?

Any sign of the crew?

I began studying other professions to see if anybody had.

So the core of this reactor, since it's not under pressure and it doesn't have this chemical reactivity, means that there's no inclination for the fission products to leave this reactor.

It wasn't until the invention of the MR and really the integration of MR with focused ultrasound that we could get the feedback both the anatomical and the physiological in order to have a completely noninvasive, closed loop surgical procedure.

The lack of engagement of humans in the society often comes with biological explanations.

In order to facilitate this improved dance date getting process,

What's the point? The point is what science does for us.

The marvel of this information

And some of them,

So what about the next step?

Okay, so now if you're a news producer, this is something you'd love to run with, because obviously, this is gold.

And the strength, extensibility and toughness of spider silks combined with the fact that silks do not elicit an immune response, have attracted a lot of interest in the use of spider silks in biomedical applications, for example, as a component of artificial tendons, for serving as guides to regrow nerves, and for scaffolds for tissue growth.

Let's return to our unique human function of free will.

Their response was typical for a species at their level of development.

Q. There is a feeling, it's like an automatic reaction. It comes by itself.

Bioreadouts are in the green. Looks like she's alive.

No reaction.

There's one biosign aboard...

And when we do biology videos, it will be fascinating to talk about, because every biological process is really just a chemical process, and it's really just the byproduct of all of these things bumping into each other.

Now your brain does these without even thinking.

the man's an extortionist. all right, here's the situation.

View single biological sequences

We also have been working with some scientists and engineers from UPenn to come up with a chemically actuated version of this amoeba robot.

I'm picking up one lifesign aboard.

No biosigns.

No signs of life aboard the jet.

Let me demonstrate how it works.

We, you, are all starving your cells.

I've gone back to the history of the first cities

And here it is

We don't have a minute... Let's think about that for 10 seconds.