Repeat, do not open your bay doors.

It will open a portal through which I can bring my war machine, the Technodrome, to Earth.

We may be the only ones who can survive around that portal, the only ones who can get close enough to this T echnodrome to shut it down.

And he was out there with a tape measure, going through the trash heap, looking for header material, or the board that goes over a door, thinking he'd impress his boss -- that's how we taught him to do it.

That's called biomimicry, and that opens the door to zero waste production; zero pollution production; that we could actually enjoy a high quality of life, a high standard of living, without trashing the planet.

And the only two rooms in the house, with walls that reached all the way up to the ceiling, and doors that opened and closed, were the bathroom and the darkroom.

(Laughter) But just as the Internet has opened up the world for each and every one of us, it has also opened up each and every one of us to the world.

And this way, we know the distances, of course to the door, but also to the hidden objects, but we don't know which point corresponds to which distance.

But as these conversations unfolded, I experienced what Alice must have when she went down that rabbit hole and saw that door to a whole new world.

So Hannah's artisanal work, and the fact that she shared her findings, opens the doors to a series of new possibilities that are both aesthetically appealing and innovative.

Paleoecology, the study of past ecosystems, crucial to an understanding of our own, feels like a portal through which you may pass into an enchanted kingdom.

I would like to show you how architecture has helped to change the life of my community and has opened opportunities to hope.

All a closet is is a hard conversation, and although our topics may vary tremendously, the experience of being in and coming out of the closet is universal.

At some point in our lives, we all live in closets, and they may feel safe, or at least safer than what lies on the other side of that door.

So people tried to escape only to find that some of the fire doors had been chained shut.

And I love to use film to take us on a journey through portals of time and space, to make the invisible visible, because what that does, it expands our horizons, it transforms our perception, it opens our minds and it touches our heart.

And just as Jenner's discovery opened the door for all of the vaccines that followed after, the drugs we've discovered open the possibility of a whole new field: preventative psychopharmacology.

She was struggling to pay her rent, but she saw EITC money as his shot at a better future.

Once life on Earth had access to multicellularity and sophisticated genetic structures, and sex, new opportunities opened up: animals became possible.

When I was a kid, I was obsessed with secret door novels, things like "Narnia, " where you would open a wardrobe and go through to a magical land.

I wanted to live and cross over into that fictional world, which is — I would always just open people's closet doors. (Laughter) I would just go through my mom's boyfriend's closet, and there was not a secret magical land there.

But there's a nonprofit behind it, and kids go through a door that says "Employees Only" and they end up in this space where they do homework and write stories and make films and this is a book release party where kids will read.

I don't know if your first introduction might have been choruses of "We Are the World, " or maybe the picture of a sponsored child on your refrigerator door, or maybe the birthday you donated for fresh water.

The idea of finding someone different to mentor, someone who doesn't come from the same background as you, whatever that background is, is about opening doors for people who couldn't even get to the damn hallway.

So if we're going to create a change, if we're going to create a world where we all have those kinds of opportunities, then choose to open doors for people.

Shortly as I approached the door of my new school and attempted to enter, and found the door locked with chains, I could hear Ashley's voice in my ears going, "Miss! Miss!

And then for a real beginner, you would go down even further and elaborate more -- say, "Open the oven, preheat, wait for the light to go out, open the door, don't leave it open too long, put the penguin in and shut the door..." (Laughter) whatever.

Some people see that as a rejection or a closed door, but for me, it's more an invitation -- to my language, to my culture, and to my art.

Now, the Earth's magnetic field is very, very weak; it's 100 times weaker than a fridge magnet, and yet it affects the chemistry -- somehow -- within a living organism.

Spindly trees, rusted gates, crumbling stone, a solitary mourner— these things come to mind when we think of cemeteries.

I didn't know what I was also doing was opening a door, because now, total strangers from all walks of life write to me all the time just to tell me what it's like for them to go back to work within days or weeks of having a baby.

For starters, we know that on the correct floor there's one room, let's call it room A, with one door to the control panel room, plus one door to room B, and one to C.

By rethinking the way we deliver the drug, we don't only make it more powerful and less toxic, we are also opening the door to finding new innovative solutions for almost all other impossible problems in pancreatic cancer patients and beyond.

Now, this tube also threw open the gates for our understanding of the universe and the field of particle physics, because it's also the first, very simple particle accelerator.

(Laughter) And Storm teaches America how to quiet her mind inside of a star portal, and when America quiets her mind, she opens up the dimensions, and in that silence, she can listen for anything and anyone.

It's like turning into this "West Side Story, " like, boomers come in one door, millennials come in another door, the lobby, they just fight with each other all day, complain, go home, do the same, come back to work, right?

You know, this way you could go to the container store and buy one of those metal sheets that they hang on the back of your door, in your closet, and you could literally stick your shoes up instead of using a shelf.

Now, apart from the usual way us spectrum types find our calm -- repetitive behaviors, routine and obsessive thinking -- I have another surprising doorway into the eye of the storm: stand-up comedy.

Now, we have a long way to go before we reach the conductivity of something like a copper wire, but we're making progress and I'm really excited about this because I think that it could open up a whole new world of possibility for tattoos.

To have even a chance of doing so, we have to control the environment precisely: the thick tabletop and legs guard against vibrations from footsteps, nearby elevators, and opening or closing doors.

But an even more efficient loop would have Hedge spin the dial one position at a time until it turns green and as soon as that happens, have him stop and open the door.

These are the two large pivoting doors that allow people to move directly from the outside, in or from the inside, out, performers or audience alike.

Maybe we could look at that to be more similar to the falling of the Berlin Wall, where a divide that had kept two types of people apart had collapsed and opened up a door for further communication.