something that we foreshadowed in my previous message and that is that we now

have two million subscribers to our YouTube channel. Two million is a lot and

it's growing by several thousand per day. Another really big number is if you add

up the number of minutes that those two million subscribers have watched, we're

now over a billion. And so that's more than a billion minutes people learning

from what we share from the MIT classroom and better still any people

once they're on our YouTube channel that's how they find their way to the

full OpenCourseWare site where they can, in addition to the videos, they can get

the problems they can get the syllabus they can get the reading list they can

really see the full array of materials from the MIT classroom that we're

sharing with the world. OCW continues to build new courses every year we now have

more than two thousand four hundred and fifty courses on the OpenCourseWare site.

Many of them are innovative approaches to core subjects that are central to

an MIT education and many of them are also unique little gems from the MIT

classroom. Gil Strang is a beloved teacher on OpenCourseWare his courses

have been visited more than 10 million times in total and he now has a brand

new course just off on OpenCourseWare in which he uses matrix methods to teach

about signal processing about data analysis and about machine learning. So

Gil Strang is bringing machine learning into his teaching and that's something

which a lot of people are very excited about. I can give you an example of

something that's really timely, Roger Peterson from our political science

department, he has a new course on OpenCourseWare on emotions and politics.

To pick an example of something that's uniquely MIT a little gem as I refer to

Norvin Richards from a the Linquistics department has a brand new course on how

to construct a language. The most exciting new capability and new

opportunity for you that I want to tell you about is MIT's new open learning

library. At present, it's in its prototype stage but we would love for you to

explore the prototype. Learn from what you see there and give us feedback as we

build a prototype out. So what is it? Well it's a huge new array of content

available to you open, free, there forever, for you to learn from at your own pace

just like everything on OpenCourseWare. Some of this content comes from

OpenCourseWare. In the future some will come directly from the MIT classroom and

a lot of it comes from MITx and so what that brings into your learning

experience is that you will now have the kinds of interactive auto-graded

problems that are the hallmark of MITx available to you in this OCW style.

You'll also be able to track your progress, see how you're doing on the

course as a whole and this will be a new way for you to learn even better from

what we offer you. So what's driving the future of OCW is the same thing that has

been driving us for 18 years and that is what a privilege it is to serve our

global community of learners and educators. And each educator who uses our

materials multiplies the impact of the learning that we offer you from MIT by

sharing it with their learners. And in fact, we've just made a book of messages

that we've received from learners like you and if you'd like to see that book

to see what others are saying about the learning opportunities that OCW offers

them, it's available online. The most important way that you can support OCW

is simply by using our materials. Use the learning opportunities that we're

sharing. Use them to advance your education. Use them to satisfy your

curiosity. Use them to open new doors for you and your career and as you're doing

that tell your friends. Tell your coworkers. Spread the word so that more

people are using OCW in the way that you already are. Tell us how OCW has made a

difference in your lives how its advanced your education. How it's opened doors

for you. We want to hear from you. Lastly, we would be incredibly grateful

for a donation, because it's donations from people like you that support our

free and open courses. And it's donations from people like you that will

allow us to continue doing what we do even better sharing the best of MIT with

a global community of learners and educators.