A plastic bottle holds collected sap from a maple tree, Friday, Feb. 23, 2024, at Northeastern University in Evanston, Ill. It’s a class that the students, who come from a variety of majors, say is providing hands-on experience in data collection and a front-row seat to witness climate change. (AP Photo/Joshua A. Bickel)
A plastic jug collects maple sap as a solar panel powers sensors measuring the movement of sap through the tree, Friday, Feb. 23, 2024, at Northwestern University in Evanston, Ill. It’s a class that the students, who come from a variety of majors, say is providing hands-on experience in data collection and a front-row seat to witness climate change. (AP Photo/Joshua A. Bickel)
Students Ashley Berson, from left, Olivia Schenker and Zella Milfred talk as instructor Eli Suzukovich III, right, listens following a class on maple syrup and climate change, Friday, Feb. 23, 2024, at Northwestern University in Evanston, Ill. It’s a class that the students, who come from a variety of majors, say is providing hands-on experience in data collection and a front-row seat to witness climate change. (AP Photo/Joshua A. Bickel)
Olivia Schenker, left, and Zella Milfred, right, tape a plastic bottle to a maple tree for sap collection during their class on maple syrup and climate change, Friday, Feb. 23, 2024, at Northwestern University in Evanston, Ill. It’s a class that the students, who come from a variety of majors, say is providing hands-on experience in data collection and a front-row seat to witness climate change. (AP Photo/Joshua A. Bickel)
Eli Suzukovich III, center, the instructor, talks with students Olivia Schenker, left and Ashley Berson, right, following his class on maple syrup and climate change, Friday, Feb. 23, 2024, at Northwestern University in Evanston, Ill. It’s a class that the students, who come from a variety of majors, say is providing hands-on experience in data collection and a front-row seat to witness climate change. (AP Photo/Joshua A. Bickel)