Tonight on PBS

PBS News weekend, after a string of fatal helicopter crashes, we examine their safety and reliability.

Then the myth of plastic recycling,

how the plastics industry knew for decades it was not a viable solution.

And off the coast of Cape Cod, a conservation success story with human implications.

A surge in sharks creeping closer to the shore.

Cape Cod has exploded as an area that draws people to enjoy this environment.

And so now the predator is coming back to feed on its prey, but it's overlapping with human activities

and certainly humans are not used to that but they're coming to grips with it. Good evening I'm John Yang.

I'm John Yang.

Tonight, nearly a million and a half Gazans are sheltering in the southern city of

Raf, the last remaining haven on the Gaza Strip, as Israel moves towards sending ground

forces into the city.

Across northern Gaza, there were more air drops of aid

from the United States, Jordan, and Germany. The UN says a quarter of the

population of Gaza is starving and some say the aid isn't enough.

The situation is so bad that no one can imagine it

and the ship, even if it helps, will be a drop in the ocean,

because the entire region is in need. They throw us air drops of

aid and we run like dogs behind the air drops. In Central Gaza Israeli bombs

were also delivered by plane. Gaza hospital officials say about 20 people were killed overnight and an Israeli strike

on a refugee camp.

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