Add Yahoo as a preferred source to see more of our stories on Google. Houston-based Shell has announced the return of "The Giving Pump" through Oct. 31. In Houston, there are 269 special purple pumps ...

Have you ever seen purple shells? Every one is very different. I find them unique and I am surprised something can be so cool and pretty coming out of the ocean. I have found these shells on the beach ...

In September and October, Houston drivers will have the opportunity to help two children's charities when they fill up. Houston-based Shell has announced the return of "The Giving Pump" through Oct.