Ellie Harrison and Sean Fletcher are at the Hay Festival, one of the UK's biggest literature and arts festivals.Ellie goes behind the scenes to meet some of the writers and artists, the organisers and many of the thousands of visitors who flock here each year. She then heads out to the country for a special wildlife safari inspired by one of the books on show. She also joins the team spotting and tagging adders using radio tracking devices.Sean is on a literary adventure of his own with a group drawing inspiration from the beautiful Wye Valley countryside. He also meets some local food producers at the festival, including one who's putting a whole new spin on ice cream.Adam Henson looks at how new technology can help in the fight against drought, and John Craven is here with new news of this year's Countryfile Photographic Competition.