There I was, an American woman,

up to my knees in muck, wielding these strange metal boxes.

I was in rural Bangladesh,

deploying sensors that we'd built

in order to understand why the ground water was

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[Music]

I'll never forget that day back in the

spring of 2006 I was a surgical resident

at the Johns Hopkins Hospital taking

emergency call I got paged by the ER

around 2:00 in the morning to come and

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Humans have been fascinated with speed for ages.

The history of human progress is one of ever-increasing velocity,

and one of the most important achievements in this historical race

was the breaking o

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You'd have a hard time finding Königsberg on any modern maps,

but one particular quirk in its geography

has made it one of the most famous cities in mathematics.

The medieval German city lay on both s

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Imagine a group of people.

How big do you think the group would have to be

before there's more than a 50% chance that two people in the group

have the same birthday?

Assume for the sake of argument th

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In 2009, two researchers ran a simple experiment.

They took everything we know about our solar system

and calculated where every planet would be up to 5 billion years in the future.

To do so they ra

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hello everyone

so before we begin i quickly want to

show you first something on the screen

well this is not me partying at my kid's

birthday last year

but i'm actually trying to show you two

different

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[Music]

[Music]

hi

i'm excited to have the opportunity to

speak with you i want to provide my

unbiased perspective on the critical

role of managing bias and ai

does that sound ridiculous well that's

b

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america has an eviction crisis

and richmond virginia is ground zero our

rich

eviction rate here in richmond is 11.44

the second highest in the u.s amongst

its large cities

imagine a single mother she

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my name is elizabeth

and i am a former racist extremist

25 years ago i left the heritage front

which was canada's largest white

supremacist organization at the time

i've spent most of the last quarter

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