The quality ofpeatisvery variable, just like coal. The best kind is compact, and nearly black ; the inferior kind is light, and of a brown color. The lower strata of deep peat bogs make the best ...

Paleobiologist Scott Lakeram analyzes 300-million-year-old coal ball fossils to reveal prehistoric plant-insect interactions ...

Meanwhile, Indonesia is a key player in the global coal market as this country ranks among the top suppliers and top exporters of this ‘dirty fuel’. In fact, Indonesia also consumes considerable ...