Some of the most important recent advancements in stem cell research have roots at the Harvard Stem Cell Institute. Two of the principal researchers explain what's happening at HSCI and what the future holds.

A group of Cambridge, Massachusetts researchers attempt to explain and then solve the challenge of building computers that can actually "see" and understand, much like the human brain.

Thanks to research by Professor Robert Wood and members of the Harvard Microrobotics Laboratory, micro-aerial vehicles like this one, based on the anatomy of a fly, may one day go where humans can not. Seen here, a carbon-fiber wing, 15 millimeters long, whips forward and back 110 times per second, able to propel the fly upward. Future models could be used to detect signs of life in a disaster zone or explore hazardous environments.

Exciting conclusion. More at http://cs50.tv/.

Guest lectures. More at http://cs50.tv/.

Preprocessing. Compiling. Assembling. Linking. CPUs. More at http://cs50.tv/.

CSS. Inheritance. JavaScript. Events, continued. Ajax. More at http://cs50.tv/.

CSS. Inheritance. JavaScript. Events, continued. Ajax. More at http://cs50.tv/.

HTTP. XHTML. PHP. SQL. More at http://cs50.tv/.

HTTP. XHTML. PHP. SQL. More at http://cs50.tv/.

Valgrind. Bitwise operators. Hash tables. Trees. Binary search trees. Tries. Huffman coding. More at http://cs50.tv/.

Valgrind. Bitwise operators. Hash tables. Trees. Binary search trees. Tries. Huffman coding. More at http://cs50.tv/.

File I/O. Forensics. Linked lists. Stacks. Queues. More at http://cs50.tv/.

File I/O. Forensics. Linked lists. Stacks. Queues. More at http://cs50.tv/.

Structures. Dynamic memory allocation. Stack and heap. Pointers. Debugging, continued. More at http://cs50.tv/.

Linear search. Binary search. Asymptotic notation. Recursion. Pseudorandomness. Bubble sort. Selection sort. Insertion sort. Merge sort. Debugging. More at http://cs50.tv/.

Linear search. Binary search. Asymptotic notation. Recursion. Pseudorandomness. Bubble sort. Selection sort. Insertion sort. Merge sort. Debugging. More at http://cs50.tv/.

Functions, continued. Global variables. Parameters. Return values. Stack. Frames. Scope. Arrays. Strings. Command-line arguments. Cryptography. More at http://cs50.tv/.

Functions, continued. Global variables. Parameters. Return values. Stack. Frames. Scope. Arrays. Strings. Command-line arguments. Cryptography. More at http://cs50.tv/.

C. Source code. Compilers. Object code. SSH. SFTP. GCC. Functions. Comments. Standard output. Arithmetic operators. Precedence. Associativity. Local variables. Types. Casting. Standard input. Libraries. Boolean expressions, continued. Conditions, continued. Loops, continued. More at http://cs50.tv/.