Arnold Mathijssen, a physicist at the University of Pennsylvania, is partial to pour-over coffee, which involves manually pouring hot water over ground beans and filtering it into a pot or mug below.

Making small changes can lead to a large impact. I found inexpensive ways to incorporate sustainability in my coffee habits, starting with a $5 investment.

While there are endless ways to upcycle extra coffee mugs into adorable decor, this DIY is the perfect summer rendition. Plus ...