薛平贵与王宝钏

Nonprofit seeks insight from devices left behind by veterans who died by suicide_我的网站

一 |     　　李 扬　　《人民日报》(2026年08月22日 第 06 版)　　近来，“一颗小行星价值数万亿美元”等话题屡屡引发关注。如果未来人类真的在太空建起第一座矿山，会最先开采什么？答案或许出人意料：很可能不是昂贵的金属，而是水、氧，甚至是土壤。　　谈到太空矿产，人们通常想到的是：地球资源越来越紧张，于是人类飞向月球或小行星开采矿产，再把资源运回地球。这种设想并非完全没有道理。    The cell phones, tablets, and laptops left behind by veterans who died by suicide may offer insight that could help prevent future military suicides, according to a nonprofit dedicated to analyzing the data from the devices.Stop Soldier Suicide collects the technology as part of its initiative, "The Black Box Project," which is named after the black boxes found on planes that help determine the cause of aviation incidents."If we could gather novel data from those that have died by suicide, we might be able to recreate the last year of life," Stop Soldier Suicide CEO Chris Ford told ABC News.Veterans are 57% more at risk for suicide than non-military adults and around 6,000 veterans die by suicide each year, according to the Department of Veterans Affairs."I think we can prevent needless suffering and a ton of loss of life," Ford said.That kind of loss is something David McDaniel, whose son Connor died by suicide at the age of 26, knows all too well.Connor McDaniel joined the Army after high school, and, according to David, he appeared upbeat during his deployment to Afghanistan, where he was assigned to protect local villages from the Taliban."Some of his Army buddies told me that he was making them laugh while they were being shelled in Afghanistan," David McDaniel told ABC News.But it wasn't long after Connor came home that David McDaniel says he sensed a shift in his son's behavior to include "more anger, a lot of frustration, a lot of gloominess."On Sept. 1, 2021, David says his son entered a wooded area with a firearm."I start screaming his name as I'm walking up the field. And just then the police, the sheriff's department shows up and they tell me to come back down," McDaniel said.He followed their direction, but on the car ride home, an officer called him and said Connor was dead after he fired upon sheriff's deputies and the deputies returned fire and killed him.Connor's death was determined to be a suicide. The district attorney's office concluded that the officers' actions were justified.While grappling with his son's death, David McDaniel was immediately drawn to the Black Box Project, which uses forensic software to unlock and comb through service members' devices provided by their loved ones to review their activity in the weeks leading up to their suicides.McDaniel works in the tech field and says if the project can find repeated patterns in online searches, they may be able to help others to prevent suicides.For instance, McDaniel says his son searched for SGLI, Servicemembers' Group Life Insurance, before his death. If a veteran were to make a similar search and look up "suicide" in the future, for example, McDaniel suggests it could trigger an ad for Stop Soldier Suicide to pop up and provide resources in the search results.Ford says the nonprofit uses machine learning, a subfield of artificial intelligence, to analyze texts and notes in order to determine sentiment or emotional tone, such as anger or desperation. He says they can also track phone usage of the deceased veterans to monitor their past sleep cycles and trace their past geo-locations."Machines can go through computations a lot faster than humans, and they can find signals that we often miss," Ford said.Since launching the Black Box Project in April 2020, Stop Soldier Suicide has received over 100 devices, Ford said. So far, he says they're seeing three patterns before most of these suicides: more anger, different sleep patterns, and social isolation.Ford's team includes Ph.D.s in clinical psychology and suicide researchers. A scientific advisory committee helps steer where and what to look for on the devices.The findings are still preliminary, according to the nonprofit, but one goal is to help the organization decide where, when, and how to target their own mental health resources, like adding more hotline staff at certain hours and ensuring calls are picked up overnight.When asked about privacy concerns of collecting data, Ford said it's something they think about daily."We don't resell the data. We don't push it out to others. We use it for our own research purposes so that we can best understand risk and then give those devices back to those families intact," Ford said.Current privacy laws do not carry on past death, meaning the next of kin typically gains new authority.Petra Oxford-Jackson, whose veteran husband Anthony died by suicide, says she gave his phone to the organization with the possibility it could save even one life."I truly believe he would have been okay with it, and it's a hard thing for a survivor to give up something so personal as his cell phone," Oxford-Jackson told ABC News.The Black Box Project received $3 million in funding from the Department of Veterans Affairs earlier this year.If you are struggling with thoughts of suicide or worried about a friend or loved one, call or text the Suicide & Crisis Lifeline at 988 for free, confidential emotional support 24 hours a day, seven days a week.。月球表面部分岩石含有钛、铁，也检测到稀土，不少小行星则含铁、镍和铂族金属等。然而，从“有资源”到“能开采”，再到“值得运回地球”，仍隔着很长的距离。

二 | 　　判断一种资源是否值得开发，要综合考虑矿体规模、品位、赋存状态、开采方式、能源消耗、加工难度以及运输成本等。

三 | 尤其在太空，开采和运输成本往往决定了一切。既然如此，为什么还要去太空采矿？其实，人类真正需要的，未必是把资源带回地球，而是让资源留在太空发挥作用。　　今天，人类开展月球探测和深空探测，几乎所有物资都来自地球：宇航员饮用的水、呼吸所需的氧气，火箭燃料，科研设备……如果只是“打卡式”登陆月球，这种方式尚可维持；但如果要建立长期运行的月球科研站，并以月球作为继续探索火星和深空的基地，仅依靠地球不断补给，将越来越困难。因此，各国航天机构近年来越来越关注一个概念：就地资源利用。　　所谓“就地资源利用”，就是尽可能利用月球、火星或小行星当地已有的资源，生产人类所需要的产品，而不是什么都从地球运过去。

四 | 在这种逻辑下，资源价值的标准发生了变化。

五 | 在地球，一吨水没有太大经济价值；但在月球，一吨水可能比黄金更加珍贵。同样，月壤也不只是普通的尘土。月壤中含有丰富的硅、铁、铝、钛以及与这些元素结合的氧。

六 | 未来，人们有望利用加热、电解等方法提取月壤中的氧气和金属，并利用剩余材料铺设道路、建设着陆场，甚至作为三维打印建筑材料。

七 | 　　当然，实现这一目标并不容易。月球表面的高真空、剧烈温差、强辐射和低重力环境，都会给资源勘探、开采和加工带来巨大挑战。月球极区究竟储存了多少水冰？如何高效提取氧气？怎样利用月壤制造建筑材料？这些问题仍需要长期研究。当前太空资源研究最重要的任务，并不是急于给月球上的矿产标价，而是绘制更加精确的资源地图。近年来，中国嫦娥工程不断取得突破，带回了珍贵的月球样品，为认识月球物质组成、资源分布和形成历史提供了重要依据。未来，随着国际月球科研站等重大工程逐步推进，对月球资源的科学认识将成为深空探测的重要基础。　　从石器时代到青铜时代，再到工业时代，人类不断发现新的资源，也重新定义“矿”的含义。今天，当探索的边界从地球延伸到月球和火星，这个古老的概念也正在发生变化。从“地球补给”走向“就地取材”，看似只是采矿地点的变化，实际上意味着人类探索宇宙方式的一次深刻变革。　　(作者为北京大学地球与空间科学学院副教授)。

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