Here are some slides from a general audience talk (download). You can also see a youtube video of my talk at the Aspen Center for Physics (general audience) here

1. Scientia Lecture at Rice, Nov 2019
2. Aspen Center for Physics, June 2019
3. Museum of Southwest and Midland College, Nov 2018
4. Prithvi Narayan Campus, Pokhara, Nepal, Nov 2018
5. Fox 26 Television Interview, March 2018
6. Rice Observatory Open House, Jan 2017
7. QuarkNet at Rice, Oct 2016
8. QuarkNet at Rice, June 2016
9. Pint of Science, Houston, May 2016 ( download )
10. Rice Science Cafe, April 2016 ( download )
11. Phone interview for the Los Angeles Times, Feb 2016
12. Phone interview with KTRH, Aug 2015
13. Cambridge Astronomical Society, 2014
14. Dark Matter and Dark Energy, Cosmology@KICC at the University of Cambridge, 2014
15. Whispers from the Big Bang, Cambridge Astronomical Society, Oct 17, 2014
16. Seeing the Invisible: The dark universe, African Institute for Mathematical Sciences, Muizenberg, South Africa, 2014
17. Seeing the Invisible, Cambridge Astronomical Society, Oct 22, 2013
18. Open Afternoon for the Cambridge Science Festival, March 23, 2013
19. Gravitational Lensing, “BBC Stargazing Live!” event at the University of Cambridge, Jan 9, 2013
20. Dark matter and dark energy, African Institute for Mathematical Sciences, Senegal, Feb, 2013
21. Exploring the dark side of our universe, Institute of Astronomy Public Talk, University of Cambridge, Dec 19, 2012
22. Exploring the dark side of our universe, Astronomy Open House at MIT, April 30, 2011
23. Exploring our Universe, Lynn Classical High School, Lynn, MA Feb 3, 2010
24. Whispers from the Big Bang, Talk for MIT Alumni (Cardinal Gray Society), Plymouth, NH, Sept 15, 2009
25. Our Universe, Madresah Taiyebiyah School (primary, middle and high school), Surat, India, June 29, 2009
26. Our place in the Universe, Al Jamea-tus-Saifiyah (Arabic/Islamic University), Surat, India, June 27, 2009
27. Our Universe, Lourdes Convent High School, Surat, India, June 26, 2009
28. Ask an astronomer, Cambridge science festival, Spring 2009
29. Seeing the Invisible: Gravitational Lensing, SLAC Kids Day, Aug 20, 2007
30. All About Modern Cosmology, lecture for middle school students as part of the Explorations in Space, Science and Astronomy program, Stanford Linear Accelerator (SLAC), Oct 21, 2006