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An estimated 1.5 trillion trees in Earth's forests absorb around eight billion metric tons of carbon dioxide each year,
據(jù)估計(jì)，地球上1.5萬(wàn)億棵樹每年吸收約80億公噸二氧化碳，
but it's difficult to estimate exactly how much carbon is getting stored—especially as forests are damaged and destroyed by human activities.
但很難準(zhǔn)確估算究竟有多少碳被儲(chǔ)存起來(lái)——尤其是在森林受到人類活動(dòng)破壞的情況下。
The Biomass satellite will use a special type of radar to see through forest canopies and measure the woody material that stores most of the carbon.
這顆Biomass衛(wèi)星將使用一種特殊的雷達(dá)來(lái)穿透森林冠層，測(cè)量?jī)?chǔ)存大部分碳的木質(zhì)材料。
Farther out in space, new data from NASA's Juno spacecraft offers insights into the extreme environment of Jupiter and its moon Io.
在更遠(yuǎn)的太空中，來(lái)自美國(guó)宇航局朱諾號(hào)探測(cè)器的新數(shù)據(jù)為了解木星及其衛(wèi)星木衛(wèi)一的極端環(huán)境提供了線索。
One of the most exciting findings focuses on Jupiter's giant cyclones.
其中一項(xiàng)最令人興奮的發(fā)現(xiàn)聚焦于木星的巨型氣旋。
While hurricanes on our planet typically pop up one by one—and tend to stay at lower latitudes—Jupiter has a consistent cluster of cyclones around its poles.
雖然地球上的颶風(fēng)通常一個(gè)接一個(gè)地出現(xiàn)，并且往往停留在低緯度地區(qū)，但木星的兩極周圍卻持續(xù)存在著一組氣旋。
One is quite close to the north pole itself, and another eight circle around it.
其中一個(gè)氣旋非常靠近北極，另外八個(gè)氣旋則圍繞著北極運(yùn)行。
After years of observing these cyclones scientists say they've seen the storms slowly drift toward the pole—but then bounce off one another when they get close.
經(jīng)過(guò)對(duì)這些氣旋的多年觀測(cè)，科學(xué)家們表示他們發(fā)現(xiàn)風(fēng)暴會(huì)緩慢向極地漂移——但在彼此靠近時(shí)又會(huì)相互彈開。
That could help explain why this set of storms is so stable. Juno also provided an update on Io's volcanic activity.
這可能有助于解釋為什么這組風(fēng)暴如此穩(wěn)定。朱諾號(hào)還提供了木衛(wèi)一火山活動(dòng)的最新信息。
This Jovian moon is constantly squeezed by the massive planet's gravitational pull, which creates enough friction to melt parts of Io's interior.
木衛(wèi)一持續(xù)受到木星引力的擠壓，產(chǎn)生的摩擦力足以融化木衛(wèi)一內(nèi)部的部分區(qū)域。
That means Io has pretty much constant volcanic activity. In December Juno spotted a massive new volcanic hotspot in Io's southern hemisphere.
這意味著木衛(wèi)一的火山活動(dòng)幾乎持續(xù)不斷。去年12月，朱諾號(hào)在木衛(wèi)一南半球發(fā)現(xiàn)了一個(gè)巨大的新火山多發(fā)地。
Scientists estimated that the hotspot was nearly a third larger than Lake Superior and was spewing six times as much energy as all of Earth's power plants combined.
科學(xué)家估計(jì)，該地面積幾乎比蘇必利爾湖大三分之一，噴發(fā)的能量相當(dāng)于地球上所有發(fā)電廠總能量的六倍。
According to the latest Juno data, that eruption was still spitting out ash and lava as of March 2. Scientists hope to observe it again during another close flyby on May 6.
根據(jù)朱諾號(hào)的最新數(shù)據(jù)，截至3月2日，那次噴發(fā)仍在噴出火山灰和熔巖。科學(xué)家希望在5月6日的另一次近距離飛行中再次觀測(cè)到它。
We'll end with a fun story—or maybe kind of a bummer of a debunking, depending on your perspective.
我們將以一個(gè)有趣的故事作為結(jié)尾，也可能是一個(gè)令人沮喪的揭穿真相的故事，這取決于你怎么看。
You may have seen some news stories last week claiming that lab-grown Tyrannosaurus rex leather could soon be used to craft wallets and purses.
你可能在上周看到一些新聞報(bào)道，聲稱實(shí)驗(yàn)室培育的霸王龍皮革可能很快就能用于制作錢包和手提包。
Those headlines stemmed from a press release issued by VML, a communications and marketing agency, in partnership with biotech companies Lab-Grown Leather Ltd. and the Organoid Company.
這些標(biāo)題源于VML（一家傳播和營(yíng)銷機(jī)構(gòu)）與生物技術(shù)公司Lab-Grown Leather Ltd.和Organoid Company合作發(fā)布的一份新聞稿。
The press release claims that together these companies will use fossilized T. rex collagen to engineer cells with synthetic DNA that mimic those found in dinosaur skin.
新聞稿聲稱，這兩家公司將利用霸王龍膠原蛋白化石，利用合成DNA改造細(xì)胞，模擬恐龍皮膚中的DNA。
Can you guess where this is going? I bet you can. Two different experts told Live Science that the notion is misleading at best.
你能猜到這是怎么回事嗎？我敢打賭你能。兩位不同的專家告訴《生活科學(xué)》雜志，這種說(shuō)法充其量只是誤導(dǎo)。
Thomas Carr, director of the Carthage Institute of Paleontology in Wisconsin, told Live Science
威斯康星州迦太基古生物研究所所長(zhǎng)托馬斯·卡爾告訴《生活科學(xué)》雜志，
that scientists have an incomplete understanding of T. rex collagen because all the fossilized evidence we have of its amino acids are fragmented.
科學(xué)家們對(duì)霸王龍膠原蛋白的了解并不完整，因?yàn)槲覀冋莆盏年P(guān)于其氨基酸的所有化石證據(jù)都是零散的。
He also pointed out that collagen is a pretty generic molecule across species, so even having a good sense of what T. rex collagen looked like at the cellular level wouldn't necessarily help you create distinctly T. rex-esque skin.
他還指出，膠原蛋白是一種跨物種的通用分子，因此即使對(duì)霸王龍膠原蛋白在細(xì)胞層面上的外觀了如指掌，也未必能幫你打造出明顯具有霸王龍?zhí)卣鞯钠つw。
So yeah, whether you're reading about mammoth mice, dire wolf puppies or dinosaur wallets,
無(wú)論你讀到的是猛犸象鼠、恐狼幼崽還是恐龍錢包，
if you see someone promising to resurrect a prehistoric creature using the powers of genetic engineering, you should probably be pretty skeptical.
如果有人聲稱能利用基因工程的力量復(fù)活史前生物，你最好保持高度懷疑。
And I promise if that changes, you will hear it here first.
我保證，如果情況有變，你會(huì)首先在這里聽到。
