Heike Appel

Heike Appel is not mentioned in either of the provided news articles. The first article discusses the increasing danger of falling trees due to drought and the legal responsibilities of individuals entering forests. It highlights a fatal incident near Flensburg. The second article focuses on Frankfurt's efforts to de-seal surfaces, mentioning the city winning the "Abpflastern" competition and the involvement of local climate initiatives. Neither article provides any information about a person named Heike Appel, so it's impossible to determine their background, newsworthiness, or relevance based on the given context.