Do humans have instincts, or are all our actions a result of our environment?

Both. Every animal has instinct. Being taught is supplement to instinct. I believe we all definetly have an instinct for survival and procreation. Here what wiki has to say:

Instinct is the inherent disposition of a living organism toward a particular behavior. Instincts are generally inherited patterns of responses or reactions to certain kinds of stimuli. In humans they are most easily observed in behaviors such as emotions, sexual drive, and other bodily functions, as these are largely biologically determined. Instinct provides a response to external stimuli, which moves an organism to action, unless overridden by intelligence, which is creative and hence far more versatile. Since instincts take generations to adapt, an intermediate position, or basis for action, is served by memory, which provides individually stored successful reactions built upon experience. The particular actions performed may be influenced by learning, environment and natural principles. Generally, the term instinct is not used to describe an existing condition or established state.

Examples can more frequently be observed in the behavior of animals (most in the less intelligent species), which perform various activities (sometimes complex) that are not based upon prior experience, such as reproduction, and feeding among insects. Other examples include animal fighting, animal courtship behavior, internal escape functions, and building of nests.

It is debatable whether or not living beings are bound absolutely by instinct. Though instinct is what seems to come naturally or perhaps with heredity, general conditioning and environment surrounding a living being play a major role. Predominately, instinct is pre-intellectual, while intuition is trans-intellectual.

Wiki:http://en.wikipedia.org/wiki/Instinct

Basic human needs precipitate each of our instincts and Maslow had something interesting to say concerning needs:http://honolulu.hawaii.edu/intranet/committees/FacDevCom/guidebk/teachtip/maslow.htm

Yes - humans have instincts.

This reminds me of the three skunks who were lost in the woods.

The first skunk said, "My instinct tells me to go north.
The second skunk said, "My instinct tells me to go south.
The third skunk said, "My end stinks but it sure doesn't tell me where to go!"

Humans have culture (learned). Only animals have instincts. Instinct- a behavior pattern with three essential features: it is unlearned, it is complex, and it appears in ALL normal memebers of the species under identical conditions. If you can say "NO" it is not an instinct. Animals have instincts because they do not possess compassion or morality.

Yes, humans ARE animals and as such have instincts. The difference between us and other animals is that we have the intelligence and awareness to control rather than be controlled by our instincts.

Instincts are natural reactions that are beneficial to man or any other animals. The earliest ancestors of man relied on instincts to survive; they are inherent in the genes like procreation is an instinct to propagate the species. Nothing about morality here in the discussion of instincts, the absence of which does not rule out instincts.

Instincts are basic responses; flight or fight type of survival; these are gut feelings and reactions to preserve life, as a natural defense in a harsh environment. They are kind of automatic responses (gift from the creator, you might say), the absence of which cause the extinction of a species including man.

What is an instinct?

Yes humans like all animals have instincts. The main one being the instinct to survive.

we all have instincts :) especially men lol as women love to point out :D

Fear, the impulses to hurt, run, attack and shout. these are examples of animal instinct that we all have.