“大象牙膏”实验，是2009年由美国《连线》杂志网站公布的十个最令人惊讶的化学实验视频之一。其实验方法是将浓缩的过氧化氢与肥皂混合起来，加上一些碘化钾或高锰酸钾（不能过多），即可观察到一股充满氧气的泡沫状浅黄色物质像喷泉一样从容器中喷涌 ...

The largest land animals on Earth. But their size has not protected them from the impacts of poaching or from the continued destruction of the vast swathes of interconnected habitat they need.