TED Talk: Clay Shirky: How social media can make history

https://www.ted.com/talks/lang/en/pattie_maes_demos_the_sixth_sense.html

https://www.ted.com/talks/lang/en/pranav_mistry_the_thrilling_potential_of_sixthsense_technology.html

https://www.ted.com/talks/james_cameron_before_avatar_a_curious_boy.html

Apple has reportedly filed an application for patent with US patent and Trademark Office for technology that apple feels can change the way an electronic gadgets are charged. The source...

So I wanted to combine all the html files into a single pdf.Is there any software to convert into pdf?