let me suggest these NPR segments
Science Friday last Friday had 2 segments of particular interest, "Celebrate July4th with Backyard Science" and "Fireworks are Packed with Chemistry". We love to blow stuff up here. I have been thinking of getting Yakov a copy of Absinthe and Flamethrowers: Projects and Ruminations on the Art of Living Dangerously by one of Ira Flatow's guests, William Gurstelle. Another guest, Anne Helmenstine who writes at About.com chemistry, is the source of the smoke bomb recipe we used during the last chemistry lab.
Today Diane Rehm had Chimamanda Ngozi Adichie on her show. Adichie was there to promote her new collection of short stories, The Thing Around Your Neck. Last November I wrote of how much I enjoyed her novel, Purple Hibiscus. Only last week I read Half of a Yellow Sun and it was even more moving. Go and listen to her if for no other reason than to hear her mellifluous voice and laugh. PRM