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 Blazor is a .NET web framework that runs in any browser. You author Blazor apps using C#/Razor and HTML.
 
-Blazor uses only the latest web standards. No plugins or transpilation needed. It runs in the browser on a real .NET runtime ([Mono](http://www.mono-project.com/news/2017/08/09/hello-webassembly/)) implemented in [WebAssembly](http://webassembly.org) that executes normal .NET assemblies.
+Blazor uses only the latest web standards. No plugins or transpilation needed. It runs in the browser on a real .NET runtime ([Mono](http://www.mono-project.com/news/2017/08/09/hello-webassembly/)) implemented in [WebAssembly](http://webassembly.org) that executes normal .NET assemblies. It works in older browsers too by falling back to an [asm.js](http://asmjs.org/) based .NET runtime.
 
 Blazor will have all the features of a modern web framework, including: 
 - A component model for building composable UI