JSFiddle - React, Tailwind, and code Playground

JavaScript

var text = 'EPA shuts down program helping states adjust to climate change http://hill.cm/FH2iWpq';
text = text.split(' ');

text.forEach(function (value, index) {
    try {
        var url = new URL(value);
    } catch (ex) {
        text[index] = value.toLowerCase();
    }
});

text = text.join(' ');
document.write(text);