Some people say: philosophy is dead....is that true?

I think the job of a philosopher is to sum up human efforts by finding connections between different branches of knowledge,but modern scientists usually talk about physics,chemistry and biology by cutting them off from aesthetics,ethics and religion,thus giving a too technical insight on basic human problems.Do you think scientists like Sagan,Hawking or Dawkins are compensating Russell,James or Durant when they talk about origin of life and universe?We really don't need philosophers now?