we are also joined by stephanie roe... roye, the girls to get excited about stem, science, engineering and math. and sparklle thames, she offers an on-demand beauty service. she comes to your door-step. you book from your own home or phone at any time. welcome to urban update, ladies. nice to see women on the cutting edge of innovation a maybe ann-marie, if i could start with you. tell us what mass challenge is. we talked about this accelerator. and how it is supposedly the most friendly start-up accelerator in the planet. >> indeed, it is. we have access to terrific mentors across all parts of business. so whether it's harvard or we get focused attention really to help us scale. they tear our business plans apart. we need to put it back together very quickly. and you know, the goal is that we become really better at having impact around the world. >> reporter: day. let's go around the table quickly. tell us about your businesses a little bit. stephanie rowe, let's start with you. >> yeah, awesome. so we actually are chang