Scientists identify culprit behind biggest-ever U.S. honey bee die-off

While fruits, vegetables and nuts can be pollinated by wind, that won't work at the scale and yields that our aggro-industrial complex needs. If it weren't required, almond growers wouldn't pay to have millions of hives transported to California each year to pollinate their trees.

I said staple crops (which is relevant when someone is claiming that "bees die" implies "we all starve"). It would be very sad to not have insect pollinated crops, but it wouldn't be an existential disaster.

Aside from almonds what other crops are most bee-dependent?

Blueberries, Cherries, Apples, Cranberries, Avocados, Melons, Cucumbers, Squash & Pumpkins are heavily dependent on bees but other crops use them too.