This is a piece of a living stromatolite, that I've just chopped.

这是一块活叠，我刚刚把它切碎。

Modern cross-laminated timber panels perform better in fire tests than steel ones do.

现代交叉叠木板在防火测试中比钢板性能更好。

For two billion years, stromatolites ruled our planet unchallenged.

在 20 亿年间，叠无可争议地统治着我们。

And their fossils are often preserved as layered rock structures, called stromatolites.

它们化常常以分岩结构形式保存下来，称为叠。

Now, what probably looks like a bunch of wrinkly old rocks are actually stromatolites.

现在，看起来像一皱巴巴老岩东西实际上是叠。

These limestone-like carbonates are known on Earth to preserve stromatolites, mounds formed by bacterial growth.

这些类似灰岩碳酸盐在地上以保存由细菌生长形成叠着称。

From this time in history we still have Stromatolites, sedimentary rocks built by microorganisms.

从这一历史时期，我们仍然有叠，这是一种由微生物建造沉积岩。

A group of stromatolites in Western Australia are thought to be 3.5bn years old.

澳大利亚西部一组叠被认为有35亿年历史。

Well the first fossil evidence are what are called stromatolites.

那么，最早化证据就是所谓叠。

Some of the oldest known evidence of life on Earth are fossilised biofilms known as stromatolites.

一些已知地生命最古老证据是被称为状叠化生物膜。

Some of the first life that we find on our planet are in these fossils called stromatolites.

我们在地上发现一些最早生命形式存在于这些被称为叠化中。

The fossils are called stromatolites, and they’re made up of layers of sediment formed by growing mats of bacteria.

这些化被称为叠，由细菌生长形成沉积构成。

These are some stromatolites that are forming today in Australia.

这些是现今在澳大利亚形成叠。

And then separately, we'll take the electrocut overlay film, or ECOP as some people call it, and we'll put it through a friction-fed plotter.

然后，我们会单独使用电切叠薄膜，也有人称之为 ECOP，并将其放入摩擦式绘图仪中。

The wavy shapes and textures of certain layers looked similar to other stromatolites.

某些次波浪形状和纹理看起来与其它叠相似。

In 2016, researchers found signs of some really old fossils called stromatolites, which are sediment layers made by bacterial mats.

2016年，研究人员发现了名为叠一些非常古老化迹象，叠是由细菌垫形成沉积。

And billions of years ago, these stromatolites, ancient communities of photosynthetic bacteria that are equal parts biology and geology, may have exhaled the first breaths of life-giving oxygen.

数十亿年前这些叠，古老光合细菌群落，它们在生物学和地质学中是一样部分，可能已经呼出了第一口提供生命氧气。

The kids were playing and I was getting some things laminated -- because teachers are forever laminating stuff -- in the teacher's room next door.

孩子们在玩，我正在隔壁老师房间里叠一些东西——因为老师们总是在叠东西。

And so these are rock taken, this is from Glacier National Park, and so stromatolites formed really ancient in our life and they're essentially bacterial gnats.

这些岩样本来自冰川国家公园，其中形成叠极为古老， 它们基本上是由细菌构成微生物席。

Layers of sediment can also just build up over time, but the shape and chemical signatures in a stromatolite can reveal if it was formed by microbes.

沉积也可以随着时间逐渐积累，但叠形状和化学特征可以揭示它是否由微生物形成。