JL is an advocate of climate change education, just transition to renewables, promoting energy efficiency, nature-based solutions, cleaner air quality, sustainable lifestyles, and climate justice who has represented the Philippines and the youth sector in different capacities during the global and regional UN climate conferences since 2017. He is also a citizen journalist, writing climate and environmental stories that have been published in international and local media platforms such as The Huffington Post, Asia Sentinel, Rappler, Sun Star, and The Manila Times. He is a two-time fellow of Climate Tracker, the world's largest youth-led climate journalism network. He is one of the co-authors of the first Philippine Climate Change Assessment Report series, the local equivalent to the IPCC reports. He is the recipient of the Miguel R. Magalang Climate Leadership Award during the ceremonies in the Philippine Senate and named the SDG 15 Youth Champion by the 2030 Project in 2017. He earned his MS Atmospheric Science degree from the Ateneo de Manila University in December 2018.