update yt link

_pages/about.md

@@ -21,7 +21,7 @@ social: true  # includes social icons at the bottom of the page
 
 Hello World! I'm An Wang Xuelong, a junior researcher interested in the [consilience of knowledge](https://en.wikipedia.org/wiki/Consilience_%28book%29), with a particular focus within the field of artificial intelligence and socio-biological science. 
 
-I aim to strike the balance the scientific pursuit to understand intelligence and the technological endeavor to adopt what we learn in the research of AI in applications for social good, namely to [accelerate scientific discovery in biology](https://www.youtube.com/watch?v=Ds132TzmLRQ)
+I aim to strike the balance the scientific pursuit to understand intelligence and the technological endeavor to adopt what we learn in the research of AI in applications for social good, namely to [improve healthcare](https://www.youtube.com/watch?v=6Af625dJnB0)
 
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